Same! It’s the same principle as CEOs and stock options. For instance Musk that set several goals (x% market share, x unit sold…) and the hardest they get the more he will receive compensations.

I am not sure how much you could negotiate but you can have something like that and being metric based. X% customers happy, x% rating change, x% customers retained when they were close to leave. Then you make the math of the revenue and profit and it’s hard to say no.