In line with remote-bricking discontinued hardware, these policies only serve to generate eWaste.
If you sell programmable hardware, or really anything with embedded software, you should be required to make all the tools and software available to end users (doesn’t have to be free, but shouldn’t require a subscription or support contract either) in perpetuity.
Licenses to enable additional hardware features are fine, but they must be granted for the life of the device (i.e. as long as it can be kept working), not an arbitrary “we think the life of this thing is 5 years”. You should never have to keep paying to use a device you already bought.
You think that's bad? I bought a "RAM upgrade" over the phone from HAAS for a CNC machine back in 2016ish. The upgrade was from 1mb to 16mb of RAM.
The technician on the phone told me to go to the machine and punch in a series of keys followed by a 21 digit code. That was my ~$2,000 RAM upgrade.
The RAM was always there. It was just locked away as "reserve value" for the manufacturer.
They're also well-known for artificially capping battery capacity unless you buy an unlock. There have been a few stories before about them unlocking the expanded capacity for free during emergencies.
The best thing to do is to not buy it in the first place.
Charging to stop blocking the use of hardware features that are already present on a product you own however (like seat heaters or battery capacity), is unacceptable in my opinion.
Software Freedom would solve all these problems by making it trivial for users to buy a software patch from a third party vendor for cheap that unlocks the seat heaters, thus destroying the incentive for manufactures to do stupid stuff like that in the first place.