If I suddenly became obscenely wealthy, I'd pay my parents debts, marry my fiance, and buy a big-ass house with a modern console gaming room, classic console gaming room, and private arcade with a Virtual-On machine in it, amgonst others.
And I'd still probably buy most of my games used with coupons, just to keep me from blowing too much on games I'll rarely/never play. I'll probably buy a few more games new, just for condition and to support developers I like- but I don't see my habits changing too much. Not much reason to, really- I mean, why pay more for the same product just becuase you can? It's silly.