Chief drive behind this? Entertainment.
Over the decades, various other sports started out....purely as entertainment.
Golf, tennis, basketball, football, volleyball, roller-derby and so on......all came for the purpose of entertainment.
We paid money to watch the sports....in exchange for entertainment.
This current trend? Making sports into a cult-like device, where one gets a lecture on politics or social ideals? It's not entertainment, and basically....we were already getting that nightly via MSNBC, CNN and Fox.
Just a gut feeling, but most of these sports-turned-non-entertainment situations....are probably going to dive on profits, and the millionaire players are going to be asking why salary structures are torn apart in a matter of six to twelve months.
At that point, people will bring the fact....we just wanted entertainment, and nothing else.