It’s that there is a large upfront cost (buying a PlayStation) which isn’t in the analogy.
Additionally, many of the games are already on different platforms (PC), just not any other consoles.
I think the biggest thing is that Sony doesn’t actually make the games (they don’t have the kitchen nor the cooks), they just sell it.
So a more apt comparison would be a grocery store, I think.
The large upfront cost is lower than it would be because its subsidized by buying the games for it!
Sony does make the games, they have many excellent first party studios!
What are you talking about!