And many companies come here when they get a surprise bill after a buggy push. Not having a spend limit is more often than not a complaint. Notice I wrote "offer" not "switch to". They don't have to be mutually exclusive and big corporations could still get limitless spending if they want.

I prefer when making mistakes is difficult.

I personally don't use any "traditional" cloud services like AWS, GCP, because of the uncertainty of costs of anything going haywire while I'm at work or on vacation.