If there are no new players coming into the game, or they come at a very low rate. And there are also people leaving the game, by either quitting for good, or quitting for a time period. Eventually the 2 lines will align and there will be a really small player pool. And those heavy plat spenders themselves will quit, since if there's no one to play with/ interact with, they won't have any purpose anymore. If the new players entering and staying exceeds the players that are quitting/leaving, the game would atleast have a stable or even rising player pool. And by that there will be more players buying plat, which would in turn generate more revenue.