Has the nba change in this day in time?

Bron, D-wade, and Bosh all gave up thier individual star power to become the big three in miami, Now melo looks lioke he wants do the same in New york. Nba has difietniely chance in terms of players wanting fast and seem like choosing the easy way out, instead of sticking it out and playing for the team that drafted them and winning. I am sure if Lebron james stayed he could eventually broughta championship to cleaveland, cuz he had a good team and they could of been dominant for many yrs to come. Cuz C's were getting old and the bulls r kinda of young. I just think is bad players have a lot control over everything and i think its making a bad product for nba has a whole. Please leave ur comments and opinions.