People short lousy stocks. If you buy lousy stocks and see lots of short-sellers making millions, the problem is your stock selection process, not the short sellers.
A few years ago Dryships had a 500 million dollar share offering. Dryships has been making shorts rich for years. That's what a share-printing company like Dryships does.
REPEAT: If you shorted 10,000 shares a year ago, you're short zero shares today. That's dilution and reverse splits at work.
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