I've been hired to a startup that uses Pave - they mentioned that they paid at the 75% percentile, and my offer ended up being more competitive than others I was getting. I think that while obviously some companies can use this data to pay less, the more likely outcome is that they pay MORE. You forget that companies are competing with each other for talent, they are not in the business of colluding together. So if I can see that other companies are paying X, I am more inclined to pay X + Y