# Navigating the EV and Software-Defined Vehicle Transition
In 2023, Tesla cut prices repeatedly, yet its automotive gross margins stayed higher than most legacy rivals could dream of. How? Part of the answer was a line item barely visible at a traditional automaker: software and services sold after the car left the lot. A Tesla owner can pay to unlock faster acceleration or driver-assistance features through an over-the-air (OTA) update, meaning a software download pushed to the car remotely, no dealer visit required. The car does not change. The margin does.
That single mechanic (revenue after the sale, at near-zero marginal cost) breaks the century-old logic of how cars make money. This lesson maps who wins, who loses, and what incumbents must rebuild.
For decades, the automotive value chain distributed profit across a predictable set of players.
Two structural facts held this together. Cars were mechanical, so they needed frequent service. And OEMs sold through franchised dealers, in many US states because of laws that require it.
EVs and software attack both facts at once.
An electric drivetrain has dramatically fewer moving parts than a gasoline engine. No oil changes, no spark plugs, no timing belts, no exhaust system. Independent estimates suggest EVs need meaningfully less scheduled maintenance over their life.
That is good for owners and bad for the dealer service bay, which has historically been the most profitable part of a dealership. Drain the service pool and the entire franchise economics wobble.
A software-defined vehicle (SDV) is a car whose core functions (drive modes, driver assistance, infotainment, even braking feel) are controlled by centralized software that can be updated over the air. Think of the car as a smartphone on wheels: the hardware ships once, the capabilities keep evolving.
This unlocks revenue models that did not exist:
Crucially, this revenue flows straight to the OEM, bypassing the dealer entirely.
Tesla did two things at once that together explain its structural edge.
1. It sells direct and controls the software stack. No franchised dealers. OTA revenue and customer relationships stay in-house. Tesla writes most of its vehicle software rather than stitching together dozens of supplier black boxes.
2. It integrated vertically into batteries. The battery is the single most expensive part of an EV, often cited as roughly a third of the cost. Tesla invested early in cell design, manufacturing partnerships, and supply agreements for raw materials. Controlling battery cost and supply protects margin and insulates production from shortages.
Contrast this with the legacy model, where the OEM buys the powertrain's most expensive input from a supplier and sells the car through a dealer who owns the customer. Tesla collapsed three profit pools into one.
🎬 [VIDEO: "How Tesla Makes Money" — youtube.com — a clear breakdown of Tesla's revenue segmentssegmentsDividing a market into distinct groups of customers who share similar needs, characteristics or behaviours, so each group can be served with a tailored approach.View full definition → including regulatory credits, services, and software]
Incumbents know all this. The problem is that their existing structure fights back.
In many US states, franchise laws prohibit automakers from selling directly to consumers, protecting dealers. A legacy OEM cannot just adopt Tesla's direct model without confronting its own dealer network and state law. Dealers are politically organized and contractually protected. This is a genuine strategic bind, not an oversight.
For a plain overview of how these laws work, the National Conference of State Legislatures tracks state-level auto sales and EV policy.
Legacy automakers were built to integrate hardware from suppliers, not to write and maintain millions of lines of code across a fleet. Several high-profile SDV programs have slipped or been restructured because building automotive-grade software (safe, updatable, secure) is genuinely hard for organizations optimized around mechanical engineering.
Writing software is not the hard part. Owning the full stack is.
If the OEM wants to control the software and electronics that define the car, it must reduce reliance on Tier 1 suppliers who previously delivered self-contained modules. That reshapes decades-old relationships and forces the OEM to build capabilities (chip strategy, operating systems, cybersecurity) it never had.
The transition is not one decision. It is a portfolio of hard structural moves. Here is what serious incumbents are attempting.
Locking in cell supply and cost is table stakes. Approaches include joint ventures with battery makers, direct offtake agreements for lithium and other materials, and in some cases building cell plants. The goal is the same as Tesla's: do not let the most expensive part of the car sit outside your control.
Incumbents are moving from dozens of separate electronic control units (small computers each running one function) toward a smaller number of powerful central computers. Fewer, more capable computers make OTA updates and new features far easier. This is expensive and slow, but it is the foundation of every software revenue stream.
Given franchise laws, the realistic path is redefining the dealer's role rather than eliminating it. That can mean:
Selling subscriptions requires billing systems, customer accounts, data infrastructure, and a value propositionvalue propositionA clear statement of the benefits your product delivers, the problems it solves and why customers should choose you over alternatives.View full definition → customers will actually pay for. Note the cautionary lesson: some feature-subscription launches (charging for hardware already in the car) triggered customer backlash. Pricing psychology matters. Owners resent paying monthly for a seat heater they can see.
Knowledge check
1. Why does software sold after a vehicle sale (like an OTA feature unlock) have such a powerful effect on an automaker's margins?
2. In the traditional automotive value chain, where did dealers historically earn the bulk of their profit?
3. Why does the shift to electric drivetrains threaten dealership economics specifically?
4. Select ALL correct answers. Which structural facts historically held the traditional automotive profit distribution together?
Select all the correct answers.
5. Select ALL correct answers. Which statements accurately describe how EVs and software disrupt the traditional automotive value chain?
Select all the correct answers.
When you evaluate any automaker's EV and software transition, four questions cut through the noise.
Does it control battery cost and supply? If the answer is no, its EV margins are hostage to suppliers and commodity prices.
Has it consolidated its compute architecture? Without centralized computing, meaningful OTA revenue is largely marketing, not reality.
Can it actually deliver features after the sale? Look for evidence of real OTA updates that improve the car, not just bug fixes.
Has it aligned its go-to-market with its ambitions? An OEM promising software riches while trapped in a service-dependent dealer model has an unresolved contradiction.
Most legacy players score partially on some questions and poorly on others. That gap is the strategic opportunity and the strategic risk.
There is a genuine open question worth sitting with. Legacy automakers have enormous advantages Tesla took years to build: manufacturing scale, brand trust, service footprint, and dealer relationships that (in a well-managed transition) become distribution assets rather than liabilities.
The transition is not automatically won by the disruptor. It is won by whoever restructures fast enough to capture the new profit pools before the old ones drain. For incumbents, the danger is not that they lack resources. It is that their existing structure, the very thing that made them successful, resists the changes required.