Eh I think you're overstating the level of lock-in here. There's nothing about the platform itself that forces you to stay, it's just the games you've already bought. You can keep the system and just stop buying new games on it.

And most people probably don't replay most games after beating them once, for the handful you do want to replay, you just bust out that console occasionally, or you grab them again in a steam sale to play them on PC instead or something.