This is what we call buyer’s remorse. Comcast's deal to buy 51 percent of NBC won’t be approved until September at the earliest. That means the company—which has a buttoned-up, no-drama reputation—is powerless as NBC makes a mess of its late-night lineup. Comcast CEO Brian Roberts warned NBC chief Jeff Zucker that there had better be good reason to displace Conan, whose show, despite a ratings decline, was still the number-one late-night program and brought in millions of dollars in revenue. Now, it looks like when Comcast inherits the company, Conan will be on a rival network, draining advertising dollars away from Jay Leno, and NBC will also have to spend millions of dollars producing programming to replace Leno’s 10 p.m. disaster.