> Microservices are nothing to do with scalability. They are about how you organise code and teams to achieve better development velocity.

I don't think this is strictly true; even though microservices are usually used that way.

Scaling up everything even when not needed has it difficulties. You can have lots of unnecessary initialisation tasks, lots of unused caches warmed up, database and socket connections that are not needed, complexities in work sharing algorithms etc.