I agree with your, but you did miss an important point. Many players, myself included, have built a nice group of people to play with. maybe even formed a clan, a whatsapp group that spans across nations. Many people like this new friends and communities a lot and feel that if Destiny fails, they will lose that. Thats why they fight for a better and longer lasting game. Humans like the status quo, so its better to stay here than move on, specially a whole group. That said, In my case, my friends and I are already looking for other games to move to (the Division being the forerunner)