[skrtskrt]

The problem is that if you're not already differentiably the best at hosting your service right when you launch, someone else that's better at hosting can just do it and take all your business.

And hosting while keeping your prices down is not just a whole different skill set, anyone that's already a big will have pricing deals with AWS so they will beat you even if you host in the exact same way.

It's probably less differentiable in the case of something like Gumroad which is less likely to have big scaling problems, but for things like a distributed database, you run a serious risk of someone who is paying AWS half of what you are per compute hour just deploy the Helm chart and undercut you completely.