I don't think uncorrected proofs and review copies are that significant a problem. People who buy uncorrected proofs are almost always rabid fans, who also buy all of the author's published works. As to review copies, it's a balancing act: if publishers sent out fewer or no review copies, then there wouldn't be a review copy resale "problem". There would also likely be fewer reviews, and likely fewer sales. The question is where the break point is -- what's the minimum number of review copies to get the best return?

I do not think that forbidding people from disposing of legally acquired books as they see fit is the right answer.