It will never happen, but my dream is for the Asahi devs, Valve, and Apple to all get together to build out a cross-platform Proton to emulate and play games built for Windows on both x86 and ARM hardware running Linux.
A Steam Deck with the performance and power efficiency of an M-series ARM chip and the entire library of games that run on Proton is just...dreamy.
Sure it's a great design, but I believe x86-64 will catch up once again now with everyone using TSMC.
AIUI, if you want the most flops per die, you'll buy x86 - probably the 128-core Xeon for enterprise money. But that's not what's best for hand-held gaming.
AAA titles are typically GPU-bound anyway. More CPU flops may not offer much benefit.