Tesla set the tone for this, want to boost your 0-60 acceleration from 4.2s to 3.7s? That'll be $2K and the change is instant once they remove the restriction.
It's worth pointing out, the Model 3 SR, Model 3 Performance, Model Y Performance, Model S LR and Plaid, Model X LR and Plaid, none of these have acceleration boost option (it's unique to the LR).
And it was nearly 2 years after the Model 3 was released, and the there have been multiple, free performance updates for the Model 3 LR and P models. The LR is kind of a unique design in that it had a decent amount of additional performance that could be uncorked due to some decisions about motors, battery, that were more about economy of scale, but wound up having additional perks.
People buy an LR with A level of performance for B price, the extra performance is not included. I look at it this way, would you rather pay $2000 more for a Model 3 LR with Acceleration Boost included standard, and have performance you'd just as soon not have, possibly burn through consumables quicker, I get it you're sort of "paying for nothing", but even as ol' school as I am about cars/performance, that concept of a purely software based "modification" doesn't bother me at all. Ford actually has performance packs for the Mustang, it's a tune and an air filter that are covered under warranty, it's not much different than the acceleration boost (change to the electronics/calibration).
If I could pay $2K and download a big performance boost for my P model, I'd do it right now.
The subscription model is a bit weirder vs. a one time purchase like Tesla offers, using the Mustang product I mentioned above, it would be like paying a subscription and if you stop, some Ford tech sneaks into your garage, removes the calibration and filter. At least with Tesla it's like installing parts, once they're in place, they're part of the car.