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.

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.