Not only it's possible, but I believe it will happen.
OP, we had the SAME type of threads regarding Nintendo bringing games on mobile platforms. And the vast majority of gamers were very adamant this would NEVER happen. You were crucified to even suggest such outcome ( I was one of them ). But we know now that that mobile is part of the strategy for Nintendo.
And what about the Nintendo and Microsoft partnership ? If a member of ERA would have suggested in a thread that Xbox Live, Gamepass and X Cloud would come to the Nintendo Switch. That member would have been called crazy ( I would have called him crazy to ). But we know now that this will likely happen. So having Nintendo games on Xbox doesn't sound that far fetched with that partnership taking shape.
I think Microsoft understands they need a stronger portofolio if they want to be successful with Gamepass and X Cloud opened to all devices : probably 2 or 3 billion of them out there between pc, werables, consoles, phones, tablets and TVs. And what a better portofolio than Nintendo games ? That would definitely make X Cloud and Gamepass a much more attractive proposition ( however I think this will start with NES/SNES games on Gamepass and X Cloud initially )
This doesn't mean X Cloud or Gamepass will have 2 billion subscribers ( some people seem to not understand the notion of "potential" market... ). But maybe if they could get 200 millions subscribers worldwide by let say 2025. At 10$ a month, that's nearly 30 billion in revenue a year ! That's 3 times what Nintendo or Microsoft did in revenue in 2018 ! That's huge !
But this will not happen overnight. As many said the infrastructure is not ready yet. But you don't wait for the infrastructure be ready in order to make strategic decision. And Microsoft and Google are making the those big moves. Curious to see what Sony does as well.