What is it that you know that all those other well-paid professionals don't?
https://www.techrepublic.com/article/microsoft-keeps-hiding-...
G Cloud was rumored to have to be #2 by 2023 or they'd shut down, and currently they are trailing quite far behind.
https://aws.amazon.com/blogs/compute/learn-why-aws-is-the-be...
AWS has a lot of neat, domain-specific products and managed services, but it's important to recognize those come with vendor lock-in and that's by design.
If possible, build out your stack to avoid dependence on AWS-only stuff. It's worth it to ask "if I wanted to transition away from AWS in six months, is this addition going to help or hinder that goal?" It's a lot easier to migrate something that uses generic technologies like VM instances, vendor-neutral containerization, and managed databases versus something super specific. And AWS has a lot of super specific stuff, just look at their ever-expanding product list [1].
Once you get away from the specialized domain-specific products, you start to realize that AWS pricing is really nothing special, particularly for VM instances as you've noted.