Ask HN: Should I continue to use Netlify or switch to AWS?

As long as you don't have a SaaS or the costs aren't astronomical, you won't gain anything by changing.

The priority is to have clients, not to optimize your site for 2-3 clients.

AWS has been there for over 2 decades and is stable, large companies of all sorts use AWS, so it is a safe bet.

Use whatever allows you to get the products completed most quickly. Optimize later.

Netlify: Potential for sudden unexpected bills there's no way to protect against.

AWS: Potential for sudden unexpected bills there's a way to protect against that many do not know or use.

One may torpedo you overnight. One may not. It should be obvious.