I see the avoidance of vendor lock-in as a way to prevent Amazon from gaining too much power compared to their competition (they already do, but you see my point, hopefully)

I’m designing a system right now and I’m specifically not allowing it to become too ingrained into the AWS ecosystem so that I can easy move it to GCP, Azure, or elsewhere (would that Digital Ocean offered better support) if/when Amazon gets too big and starts to take advantage of their size. That will happen. It’s only a matter of time.