… if you only run a few (micro)services on a few dozen machines.

Whole enterprises run everything in the cloud. 1000s of vms. From active directory, dns, virtual desktops until “lift and shift” legacy apps. And also a lot of networking to make the company networkwork with aws…

And that is only the technical aspect of it.

Migrations take years.

Not if you use the managed services which is a very alluring proposition for most businesses.