Valve had no problem porting thousands of games to Steam Deck without paying developers a dime. It is a proven fact that a functional DXVK/Wine runtime can support more AAA video games than whatever Apple is paying for.
You keep bringing this around to revenue, but Apple could solve this problem if they didn't benefit from the status quo. A company 10x smaller than them did it, a company with full control over their hardware stack has no excuse to drag their feet and copy Open Source's homework.