In my experience being both and employee and employer it’s not usually the best move to stay. You were leaving for a reason. If the reason was not money, then all it’s done is convince you to put up with it for longer. If it was money, it’s just a matter of time till someone offers more, and the company knows that. They will build redundancy and remove you so you don’t disrupt business by surprising them with an exit.

If you’re not making enough there it’s because the company doesn’t want to pay you more or can’t. If a company is paying you more than they would like, they’re not just going to accept that, action will be taken to fill that spot at the desired price point.

Is all this right and moral, of course not. But capitalism never is, especially these days.