Tacking onto another comment, companies aren't just leaving GCP for AWS - the NSA recently left Microsoft to award Amazon a $10 billion contract [1].

Mindshare is definitely key, but there's also the fact that AWS has been around longer and has a more robust services offering. And as the first mover, AWS has been able to set the market standard for pricing.

That's a double-edged sword though, and many businesses are dramatically overpaying for AWS services [2].

On a related note, I built Usage.AI [3] to automatically buy and sell Reserved Instances on AWS to cut costs.

[1] https://www.engadget.com/amazon-web-services-re-awarded-nsa-... [2] https://www.forbes.com/sites/forbestechcouncil/2022/04/19/cl... [3] https://usage.ai