>including what services they will provide upon its sunset (such as a partial refund and disposal if the product folds before that date)
This might be OK for a huge company like Google, but for many others, what good is it? If the product folds, it's probably because the whole company folded, and when that happens, you're not getting a refund, regardless of what any contract says.
Why people like me buy iphones? Not because they've got the best hardware or have the best camera or the best apps (though they're pretty damn good at those), not because they are open for hackers (they're basically the worst), but because the manufacturer provides de facto support for at least 5 years after release. My kids all have iPhone 8s and they still get security iOS updates.
Did they promise that anywhere? No. Did they kept on their unwritten and unspoken promise? Yes, for years now. Do you have to be Apple to do this? I don't know, would love it if the answer was no, but looks like everyone else treats this as cost and Apple treats it as value added?
I mean that's fine?
If you still exist then your obligations remain. Maybe we will have some sort of "digital rights bankruptcy"