"Predators" like Raiola exist, so that "predators" from the Club side dont make players their prey, ala Kane. We laugh at clubs exploiting naive players, but throw a hissy fit when players look to protect their own interest, quite hypocritical. You're either the wolf or the sheep, and people like Raiola make sure the player is not the sheep.
I dont like Raiola either, but I get why players get him. If I was a player, I would too.
As for Pogba, it is what it is at this point. Either he's leaving for free, or he signs a big contract. Its a win-win for him. If he signs, we get a good player. If he doesnt, we go look for a replacement next summer.