Sure they do. Accounts are essentially free. And you know what they say about free. If it's free then your the product.
The coin is all they want to sell to you. More people come in and earn or invest then those who already have a start at the game will have the opportunity to keep siphoning money out of the pools. So long as new users keep coming in and buying blurt, they can keep extracting through curated contact. The more they can curate, the better for them.
Either you start with millions of blurt or stay earning scraps while the rich gets richer off your work.
Get your blurt booster shot yet?