[mapkkk]

You're right in that money is not the only motivator for people. I would also argue that if you told them the _real_ reason, aka your own actual motivation behind the offer, the number of people who would actually be "playing" would be much lower.

I would be motivated to collect free data if it meant I was helping save lives, with that help not being behind a paywall.

I would be motivated to play a free game with ads just for the fun of it.

I would not be motivated to play a free game just for the fun of it if my playing of the game was furthering some faceless corporation's profit motives.

In fact, in that last scenario, I would feel tricked, and it would take a non-trivial amount of money for me to not feel that way.

[tartoran]

Same thing with social media. If they clearly disclosed that the more time they spend glued to their apps the more money the company makes the majority would be turned off.