That is how soccer industry works. Nobody remains for too long on the same club anymore. It's valid for players and coaches. And I don't think it's about pursuing better or fairer life conditions anymore, because payrates are already quite decent nowadays, despite not being in an european or arabian league.

The point is that people are constantly wishing more and more, in a greedy way. They can't get satisfied with 1$ million dollar wage. They have to accept the next 2$ or 3$ million dollar offer they receive from another club right after, as if 1$ million weren't enough already...

Loyalty doesn't exist in soccer anymore, with few exceptions. And people don't even other about it anymore. For most fans it's normal and acceptable, while also claiming they would act the same way if they were on the players' shoes.