This is a bit over my head. How does this apply to Google but not Apple? Don't they do the exact same thing? One of the arguments I saw was Google pushed its ow

This is a bit over my head. How does this apply to Google but not Apple? Don't they do the exact same thing? One of the arguments I saw was Google pushed its own market over others. But Apple makes it so you can't use any other market period. So I'm confused...