It’s okay to be dissatisfied and look for something better. However, I have worked in several companies in this industry and I can say that none of them were much better. It all depends on someone's priorities.
Someone will say that it is much better in another company, just because it suits his/ her priorities better. Anywhere you go, you gain some things and you lose others. Maybe that’s why there are a lot of people here who complain but don’t leave? Because they know that nowhere is the grass much greener.