I used to be way against these types of teams, and part of me still is. But lately I wonder if these "plastic" teams Leverkusen and Wolfsburg and newcomers Hoffenheim and now Red Bull Leipzig are such a bad aspect of the Bundesliga. The traditional clubs have mismanaged things their own affairs for so long, and Bayern takes the heat that the traditional clubs aren't competitive enough. Maybe it's time better run clubs made a charge for the top.
My worry about these types of clubs is that the fans get lost in the translation, as they do in England. But as mentioned above so long as fans retain the majority of the ownership, perhaps these clubs will be responsible to their fanbases.
Either way, I see this becoming an issue that Bayern will take a stand on, one way or the other. Personally, I hope Bayern merely makes sure things don't get out of hand, without blocking things entirely. It will be interesting, seeing as a percentage of Bayern is owned by Adidas and the like. I just don't want to see a Manchester City of the Bundesliga. Not that Manchester City doesn't have legitimate history as a club, but I'd rather not see clubs 100% artificial where the "fans" act as if their sugar daddy should buy them a trophy