All that's happened is that the audience has changed. Ownership of your device does and did matter - just not to the wider market that's now being served by the Bambu devices. The market couldn't have grown to this point without the open source printers, I'm convinced of that. And I strongly suspect that there will always be open source printers out there, and they probably will have feature parity, and they probably will be a bit more expensive, and people will say they have "failed" because they only hold a small percentage of the market, but you know what? The market will be ten times the size. Not everyone has to like the thing for the thing to be viable.

In a sense Prusa are already proving this: they're not really competing on price, and they can't build printers fast enough to satisfy demand.