Probably what OP is suggesting is that in return for that $5B, Apple will call up Google and say "hey we're adding these new privacy protections, will that be a problem?" and Google will have time in advance to get around them
For Apple, which has a market cap of over $3 trillion, the $10B from Google is the equivalent of sofa cushion money.
Apple isn’t going do any favors for Google for a measly $10B.
It’s much more meaningful for Google and Google knows it. For them, it’s a bargain, as it gives its advertisers access to customers who actually spend money.