I am looking for service which should exist in AI field. Cloud provider has built the training platform, notebook as service, model as service etc. What other service should exist in this landscape.
Generally, I advise people not to look for "AI" ideas, look for problems that people have that might be improved or solved using machine learning. Unless you are specifically talking about problems that ML researchers and engineers have, in which case, you should work as one and build solutions like they would today, and see what problems you run into that can be improved.
A cloud platform which allow to get access to very high end training (e.g 20 connected TPUs, A100, etc) with a pay for what you use.
As an AGI researcher I have a few experiments to do on such hardware but just for one to a few days. I would do it if the cost was low.