You get paid out in the token of the farming platform - they encourage you to stake that token by offering you an even higher return on that - the value comes mainly from people buying that token to earn those higher rewards.
It's basically all a high risk decentralised ponzi scheme.
thanks I get it, but why then Cub is going this way? I mean if this is ponzi...
I guess with the right tokenomics it could evolve into something sustainable.