In practice, the difference is that consoles tend to be sold at loss, they wouldn't exist if it wasn't for the 30% cut. And in my experience, another big difference was that when I had consoles, I could easily borrow my friend's games, or buy cheaper games used. I don't know how it works with digital goods on modern consoles, but Steam actually has a feature to lend your library to a friend, so there's precedent.