Yeah, dealing with Nvidia's concerns are easy. ABK games already aren't on GeForce Now, so the easy concession there is simply to offer Nvidia a 10 year ABK games on GeForce Now via Steam ownership deal.
Google will be trickier to deal with, easiest concession there is to sign a deal guaranteeing that ABK games will release on both Xbox's upcoming Android store and Google's Play Store for 10 years.