Capcom already has bunch of p2w/mtx included in their single player games like DMC (red orbs) and the RE games, so they might as well give us the option to buy the decorations in MHW. The drop rates for some decorations are already so absurdly low that you could play the game for like 600+ hours and never get a rare decoration like bow charge plus. If you don't have that skill and main bow, your damage is cut significantly. And it's not just one decoration that has an absurdly low drop rate, there's a bunch of others. Let me just drop a few bucks and let me buy the decorations out right since Capcom is never going to increase the drop rate for it. The game also isn't PvP sooo why not.