Cloud providers have financial incentive to push microservice architectures
Cloud providers give corporate consultants statistics like "microservice architectures are proven to be X% more likely to succeed than monolithic architectures"
Cloud providers offer subscription-based tools and seminars to help companies transition to microservice architectures
Companies invest in these tools and seminars and mandate that all new projects adopt microservice architectures
This is how it went down with Agile at my company 10 years ago, and some process certifications and database technologies before that. Based on what I’m hearing from upper management microservice are probably next.