There's mostly people disagreeing with me in the comments, so I'll make a concrete prediction.

I reckon 5 years from now it'll be obvious that x86 is on its way out, and 10 years from now it'll be replaced by ARM in all but narrow backwards compatibility demanded use cases.

I'm hopeful that manufacturers will ship regular socketable ARM cpus just like they do with x86 now, but who knows whether that will be the case or if we'll move more towards everything being soldered on all in one solutions.