It's not that I'm not going to play it - I likely will at some point, thanks to stuff like game rentals and similar. It's just that I won't buy it, since I don't want to support any business which gives us no choice but to use Steamworks, Origin, GFWL, Ubisofts always-on DRM or similar crap.
I do not understand what you mean. If you are complaining about Steamworks, Origin, GFWL, or what ever, how can you rent the game? The only way I know you can rent the game is through the 360 or PS3. If anything you are still supporting Bethesda buy renting the games because the store will have Buy the game for you to rent, so Bethesda is still getting the sale.
So no matter what you do, except for one certian thing, you are supporting Bethesda and other buisness because you are still giving money for the their product. It might not be the $60, but you are still giving $5 for the rental and they are still getting the $60 from the sale of that rental so YES you are supporting the business still.