GAE came out and people immediately built their entire businesses on them.
It's important to provide a detailed analysis weighing the pros vs cons of building an application on any brand new service like GAE etc.
For instance, one con could've been "if they ever increase their prices by X amount, then we're fucked" would've been a pretty relevant con to consider before jumping into using it.
Re:Amazon Aurora Backtrack
by icebraining on Thursday May 10, 2018 @02:56PM
(#17041906)
GAE wasn't brand new when it increased prices; it was three-years-old - the same age as Aurora today.
Meanwhile, the original post you replied to did not say to completely avoid AWS, only to use "standard EC2/S3 services" rather than provider-specific ones. It may not be the middle point you prefer, but it's hardly an extremist position worthy of ridicule.