From where I stand it's the opposite. 5 years ago microservices were cool, now it's just the banks and telecomms adopting them, while the others realise sometimes they're useful, sometimes a monolith is useful, sometimes a service-oriented architecture (not micro) is useful.
Yea, I think they "won" out in the discourse over the last ~5 years, but I'm convinced it was another ZIRP phenomenon that will quickly fade as belts get tightened. When money rains down like mana from the heavens, sure, go ahead and hire half a dozen Ops folks to run your big ball of mud that maxes out at 8 req/s and has a 6 figure monthly AWS spend. I think things are going to swing back the other way, purely because efficiency will more important than it was over the last decade.
I guess not since microsevices have won already.