I suspect the 50 mil / month guys will choose between AWS/Azure/GCP based on credits + discounts because all these clouds will be around 10 years from now. But it's true that I have no experience at that level (only from 0 to 9 mil / month) and the calculus could be completely different. I don't actually know if they could get greater commitments at that spend but it sounds likely. That's more than half a billion a year. Huge.

Perhaps someone who's made the decision on that can share.