I mean, when people think of AWS services, do "service and stability" really come to mind? IME it's impossible to reach a person unless you're a multi-million-dollar org, and Amazon itself tells customers that AWS services can go down at any time and it's up to the customer to architect the application to deal with it.
If I had to peg a reason AWS gets treated differently in the marketplace, I think it's probably some combination of a) AWS was first to market, and b) AWS revenue seems materially important to Amazon, while Google Compute revenue is a rounding error to Alphabet. Therefore, Amazon has a lot more incentive to keep, maintain, and grow AWS.