Netflix has shifted from chasing subscribers at all costs to running a lean, cash-generating media business.Netflix (NFLX -1.17%) is back in the spotlight. After years of questions about saturation and slowing growth, the streaming giant has staged a significant comeback. Investors are paying attention, not just because of its subscriber numbers but also because Netflix is reinventing how it makes money -- and the results are starting to show.Here's why everyone is talking about Netflix today and what it me ...