Bingo. I have worked for one of the largest multi-nationals on the planet (GE Finance) and saw how much they focused on the business itself, without too much regard for the stock. Conversely, I worked for smaller finance company and they focused a great deal on the stock/portfolio, to the point where the decisions made were suspect, at best. NFLX reminds me very much of the latter - they are a professional PR machine that inspires retail mania while dumping their own share into the open market. Disgusting.
You forgot to add increases in expenses due to premium for content to maintain customer base. Also trasition to streaming will have cost associated as well. Increase in competition will make 70 million hard to get but I believe you are wrong with your assumption as margins improve with more subscribers. They need to add rougly 10 million a year to even consider being anywhere even close to 140