I spent a minute thinking about it, and came up with the following conclusion:
Who. cares.
What the primary focus should be on is in designing the game so that it has enough depth for everyone to have their own way to have fun, while at the same time providing longevity for the game.
If the game ends up to be like D2, where barring pvp the only thing you really had to do after you grinded the levels was hunting for items for the sake of hunting for items, then it will have alot more issues than just jsp being there.
If it so happens theyre capable of designing the game in a way you will have means of progress that are skill based, then some guy who spend 40k on his item set will be left behind anyway and you wont have to care about him having his gear, same way as people buying raid carries in WoW.