They’re not actually relinquishing any control. They’re just allowing subsidiary “app stores” to take a tiny cut while Apple still controls everything.
I’ve been an Apple fanboy for years, but less so these days. I can’t imagine that the EU won’t fine them for this, although it’s hard to imagine any fine that would make an impression on a $3 trillion company.
Both of them undoubtedly need a smackdown for anti-competitive behavior. I would even argue that both need to be broken up. But Windows can be hardened. And again, there’s Linux.