I don't see it as that big a deal and think it will happen more. It's easy to travel now, people care more about other parts of their life.
Whatever job you do, imagine if you just sent in your application and that profession decided, fairly randomly, where you had to work for the first 5 years of your career...but they could send you anywhere else at any time. So imagine your 5 years are up, and you get a call from 2 of your friends saying "hey, let's all work together for a few years in our late 20s!" Then, later, you decide you want to move closer to home, etc. Whatever.
Also when you think of basketball as a game (which it is) and think of players as people with choices (which they are) its starts to be more "hey, where would be fun to play and who would be fun to play with?" Kind of like local pick up games. Change it up sometimes. Have some fun.