I'm old enough to have been down this road a dozen times, and it has always ended in tears. The ones I bought into either came into the market too early, too beta, or too late, or just weren't able to see it through or abandoned hope mid journey.
I think it has a great chance to be a great thing.
Why? The magic isn't the Framework Ecosystem. It's one thing, un-crapified modularity. The reason most of us can afford to keep a car working isn't because of the great Mazda or Ford ecosystem of parts. Its because the un-crapified modularity of those parts. The designs are "open" (they're not in the libré sense, but they are simple re-make or recreate ). That is why most of us can keep our cars going. If I need a headlight, or an alternator, or a throttle-position sensor, not only does Mazda make/have the part, there are a dozen other people who make the part. I not only get a replacement, but I get choices in a open market in a range of prices and qualities.
I imagine in 2032, even if the company Framework has disappeared, there will be a lady in New Jersey making inexpensive replacement modules. That is a 'good thing'.
Its no accident everything on an Apple device is soldered down. If they made cars they'd grind down all the bolt heads and embed the engine in epoxy. It's their ethos. If my macbook ssd goes bad, all they can do for me is sell me a new one. The beauty of the Framework is that each module can be replaced. So no, the typical user is not going to completely upgrade their laptop in 8 years. (but they could) But, most will want to replace that one broken part on their otherwise perfectly good laptop.
Another way to think about it, lets say I have a 10 year old car, worth $5k. To replace every part might truly cost me $35,000. But the way chance works, it's rate to actually need to replace every part. And the parts that need replacing are usually relatively inexpensive.
Some years ago Consumer Reports Magazine had a section where they'd list the costs of all the replacement parts of a new car. Was interesting. IIRC it was about 4x the cost of the car.