How do people get away with this? Non-paying bidders

Look at all the positive negatives for this guy for non-payment. Yet ebay does nothing.
http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=gros.dann&_trksid=p3984.m1559.l2776
http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=gros.dann&_trksid=p3984.m1559.l2776
IT CAN'T BE A TRUE PLAYOFF UNLESS THE BIG TEN CHAMPIONS ARE INCLUDED
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Doug
Liquidating my collection for the 3rd and final time. Time for others to enjoy what I have enjoyed over the last several decades. Money could be put to better use.
LOL??
IT CAN'T BE A TRUE PLAYOFF UNLESS THE BIG TEN CHAMPIONS ARE INCLUDED
Dodgers collection scans | Brett Butler registry | 1978 Dodgers - straight 9s, homie
EDIT: I see someone mentioned above that you can't leave negative feedback for a buyer. That is asinine and makes this side of the feedback loop all but meaningless... Has this always been the case?
Apologies if this is obvious, but why haven't any of these sellers left negative feedback? For fear the buyer would return the favor? I thought one couldn't leave feedback for a seller until the item was paid for..
EDIT: I see someone mentioned above that you can't leave negative feedback for a buyer. That is asinine and makes this side of the feedback loop all but meaningless... Has this always been the case?
No. At one point, sellers were able to leave neutral or negative feedback for buyers, too. That ended several years ago when ebay focused on buyer satisfaction to the exclusion of all else.
Collecting 1970s Topps baseball wax, rack and cello packs, as well as PCGS graded Half Cents, Large Cents, Two Cent pieces and Three Cent Silver pieces.
For buyers, to me, if you pay, your obligation to the transaction is over and you should get an automatic positive that a seller could add to if they wanted OR if they dont pay, it is an automatic negative.