1: No ads, ever
2: No reason to sell my data. They already have income, and if users found out they were selling data, they'd quickly bail from it (At least with the service I use, which is aimed more at users with privacy concerns), which would ruin their steady revenue.
3: Actually a reason to IMPROVE the product, because again, users will leave if the competition is better.
Plus, it's not that bad price-wise. I think it comes out to $3 a month for what I do with a yearly sub.