How can they sell their PlayStation library with it? Sony'll ban accounts that even try and Sony isn't allowing physical libraries be built anymore. Replacing a platform starts to pick up a lot of extra baggage once the company behind it controls more than the platform itself, even if you count switching the literal base platforms like that as frictionless.

Ignoring the above for a moment, this is exactly the kind of "exactly how much interference is problematic rather than good business" debate I was referring to. Obviously it's harder to sell a PlayStation and get another system than it is to eat a different burger that day. And obviously this is easier than if the burger joints in the region collude to raise prices on Saturdays but how impactful is it? Well, that's precisely the debate. Most side long before "it'd be impossible for an individual to do anything at all about it" but even that isn't universally held.