Apple is a public company, and face the same pressures to make profit that Google does. If they can't "capture the value" of the platform they've created via the Apple Tax, there's a decent likelihood that they'll be forced (by pressure from their shareholders and the market) to start giving away your privacy too.
So as you say: Right now you have a choice not to give up your privacy. If Epic prevails, there's a good chance you won't have that choice any more.
Just like the ones you mentioned it’s not really an equivalent solution.
I agree that it costs time, effort and money to develop each functionality. I fail to see the choice between only iOS and only-Android. It is not mandated to choose only between these two.
Politicians and lobbyists (”the law”) are awful at “correcting” problems like this. It’s a total fairytale. We’re better off leaving the out of it.
My apologies, but I don’t see what options I have? Either I go with Apple, or I go with Google.
Going with Google is akin to giving away all your privacy, going with Apple is akin to giving up all your control. Neither is really a great option, so we need the law to step in and correct what the free market (apparently) does not.