Last week, the Federal Trade Commission said it would examine hundreds of past tech deals to see if they were hurting the competitive landscape. Big tech companies buy a lot of startups, either to acquire technology or to get their hands on hot engineering talent — a system that benefits venture capitalists. In fact, mergers and acquisitions is by far the most common way for VCs to make back their money and then some. If the FTC puts a damper on deals, it could be a problem. Molly Wood spoke with Paul Kedrosky, an investor with SK Ventures, and he said folks are stressing.