I don't like Kerry. Just because I think he's an anti-American sack of crap, however, doesn't mean he occasionally stumbles upon something I agree with.
If you ask me, though, buying out your competition is the anti-capitalist move of the two. I advocate competition, not an artificially limited supply market with artificially limited demand.
This, unfortunately, is the same type of short-sighted thinking that gets us things like antitrust laws that really screw up the market.
Even if, for some reason, you believe that the government ought to be involved in central planning of the market--which is what you propose, let's be clear--it wouldn't make sense to allow this because, as I've noted above, there are market efficiencies in allowing exclusive distributorships, particularly because it allows exclusive distributors to focus on interbrand competition.
For further discussion, I'd recommend a wonderful resource, "Antitrust Law and the Economics of Product Distribution."
http://www.amazon.com/Antitrust-Law-Economics-Product-Distribution/dp/1590316975/sr=8-1/qid=1170886121/ref=sr_1_1/002-7650305-4563217?ie=UTF8&s=books