IDk anything about promises vs this but... the key point for me, here, is subscriptions.<p>Both software & subscription based business models have proved <i>way</i> better than just selling stuff. Tesla's business is increasingly proving that its in these businesses. If Tesla can normalize >$200 software subscriptions, this changes the game.<p>For example, there is an interesting & contested economic question about planned obsolescence in cars. Once a long lived product reaches maturity/saturation, demand plateaus or depletes. Refrigerators, for example, are a different industry once most houses have one TVs too. Some theories of the great depression, for example, have market saturation as a primary culprit.<p>In the 30s, planned obsolescence was transparently promoted as a depression ending plan^. Orwell, writing 1984 after the war, predicted continuous low level warfare, a means of destruction to counterbalance production. It was widely thought that saturation points were the weakness in modern industrial economics.<p>In any case, Henry Ford's engineering ideal of simple, built-to-last cars lost out to GM's annual design changes... demand based in fashion & trivial novelty, rather than utility.<p>Today, Japan absolutely enforces obsolescence for cars. EU countries, often via environmental taxes also push old cars off the road to encourage new ones. Many cars are built to last 100kms/10yrs. Between insurance, tax, biannual roadworthiness tax and such, the most economical way to own a car is a cheap, new one.<p>Anyway... contrived obsolescence is just the most on-the-nose way of keeping the ball rolling. One of many. There are also new markets. There's fashion, like it or not. There's technological improvements, at least during some periods. Any can work.<p>In any case... subscription and software business models could change some real imperatives in the auto industry. Building cars to last is possible, manufacturers just haven't had the incentives to. If the number of Teslas <i>on the road</i> becomes a multiplier for a meaningful revenue source... the incentive to build long term becomes significant. Turns a linear trajectory to a saturation point into an exponential.<p>To the extent that this succeeds, the auto industry is going to be all about the fleet, rather than the factory door, soon. As always, affordability will <i>not</i> be the endpoint.<p>^<a href="https://upload.wikimedia.org/wikipedia/commons/2/27/London_%281932%29_Ending_the_depression_through_planned_obsolescence.pdf" rel="nofollow">https://upload.wikimedia.org/wikipedia/commons/2/27/London_%...</a>