NBA changes rules that teams have to adapt to. The addition of the 3 point line changed how teams had to draft, trade, and recruit via free agency. Freedom of movement rules at all levels have changed how teams teach and recruit/draft defenders and scorers.
Can you imagine being an NBA team that built itself in the 70s on slowing the game down via slow big men and guards that could handle the ball and pass but couldn't shoot? Then the 3-point line is implemented and they have to adapt, the same way we as managers of a game have to adapt.
I have 1757 players for sale and I'm $25,835,360 in debt. Buy them at outrageous prices, or be selfish and make me go bankrupt. You decide, BB.