On the Steem blockchain, there are no adds and there is no data to sell. There is no revenue model. The price of STEEM wouldn't go up because of profits because there is no profit to be made anywhere.
Add's could (or maybe should) be sold for Steem/SBD to create more demand/value for the Steem tokens. The recieved Steem/SBD should then be divided between those who allow add's (by personal settings preference) in / besides there 'news'feed based on there SP or some other method!
Any thoughts about this @exyle ?