Best Buy is going to slow down its store growth next year, executives announced as part of their third-quarter results, which also hinted at layoffs and corporate-employee buyouts. But do they really need a lot of new stores anyway? The retailer is, after all, on track to have 1,000 US stores by the end of its fiscal year in February. That's gotta hit most of our population, right?CEO Brad Anderson blames the last 90 days of the economic slowdown for much of the electronics giant's woes. The thing that amazes us about this economy, and how companies are reacting, is that business models that took years, and many millions of dollars, to build up are getting shot down after a matter of weeks.It's hard to believe that a concept that created the largest electronics specialty retailer in the country was flawed in the first place. But we're pretty naïve around here, so a lot of things probably get by us...