Ask HN: When can you expect to be sued by a Big-4 for exploiting a loophole?

Hi, I found a weakness on a Big-4 website, whenever I create an account and launch a certain script, I'd earn 50-70$, I can do this a virtually unlimited number of times. I do NOT need to lie or use fake credentials to take advantage of this. I warned them about it, send them some of my code. They classed it as a low priority issue, said they were aware of it, that it was "working as intended", and that they didn't plan on fixing it. So I'm like, ok, maybe they don't realize that I can do this on a large scale, that's free money then, or maybe it's just that they're a multi-billion dollar company after all, why would they care about a measly thousands $ or a few grands of damage.

I think it would be hard for them to get me convicted as I'm only using my real legit credentials, but they could certainly ruin me with legal fees if they ever wanted to sue me.

When do you think I should stop?I did it with a few accounts already, I honestly think I could easily make a few grands per day if I went all in on this, I don't know when I should realistically expect to get in trouble.

I kinda want to use this as a way to live well while working full time on my startup, this is probably a crazy idea, but it could work.