And this is exactly how you end up with an overbuilt system which is difficult to comprehend because some "architect" decided you need to be able to change cloud providers on a whim. You pay for that decision every day and 99.9% of you are _never_ going to switch providers.

Web development is full of engineering astronauts who think they need 8 levels of abstraction to solve relatively simple problems. Oh, and for that 0.1% that does actually switch, they soon realize they're abstractions weren't as good as they thought they were and they have to reimplement every interface anyway.