We can see that f***f, the person who got outbid by the sniper, only bid once. He's a traditional eBay bidder who takes advantage of the so-called proxy bidding. Proxy bidding lets the winning bidder pay the amount bid by the second highest bidder plus a small increment, the least amount the winner bidder would have to bid in order to outbid the second person. While proxy bidding saves f***f tons of trouble, when he got sniped by r***a in the last second, he didn't have a chance to decide whether he wants to bid higher. Although one could argue that if f***f really wanted to pay more, he should have raised the first bid. However, a person also makes a bid to gauge interest level from fellow bidders. A sniper, by virtue of his operation, conceals his interest until the last second to keep the interest artificially low.
There is one thing eBay can do to discourage sniping: every time when a bid is made, whether it outbids the current highest bidder or not, the auction end time is extended by an hour. The sniper r***a in this case would have extended the end time by 20 hours. Another orthogonal policy adjustment is to limit the number of bids each bidder can make to a low number, say 5. This encourages more bidders to take advantage of proxy bidding, as well as limit the amount of time a bidder can extend the auction end time by bidding.
eBay, I hope you're listening.