Netflix stock has soared over 24,000% since 2006. Here's why I'm still not selling.I have held Netflix (NFLX +0.41%) stock in one account or another since 2006.That summer, I wrote a 5,000-word overview of the video rental industry for another media outlet. It took me weeks to research that piece, including visits to the leading video rental stores around town and a phone interview with Netflix press chief Steve Swasey.And by the end of that process, I was convinced that the movie industry was destined for ...