The challenge with cloud has always been the selling point of “infinite scaling” vs the flip side “infinite billing”.

It’s not in their interest to make cost controls work well.

Ideally you’d be able to set something granular like “allow this service to scale up only 10x, measured at an hourly level, and alert me when it happens. Drop all requests that exceed 10x”.

And then you are mostly in a throttling situation until the burst clears or a human can review & accept increased usage is ok/increase thresholds. I’d rather have services go slow during excess load (like a real server) than go dark for remainder of month.

This seems a lot better than brute force “turn everything off at $X level of monthly billing” or “no limits you can charge me infinity dollars”.