The options Starz (and every other premium cable provider) have right now are these:
1. Get that content online, now, in a convenient form that is cost competitive with Netflix and Hulu or at least Amazon Video on Demand.
Or:
2. Stagnate and eventually die, because the subscriber base for pay cable is going to do just that. Only old people are going to have cable in two or three years.
There are no other options. Without Netflix or Hulu, if Starz doesn't have the ability to launch their own effective pay service online, they will never see any of my money (they probably wouldn't anyway; as others have mentioned, Starz videos tended to be ones I avoided due to quality problems). I have never had cable in my life...but I pay to consume premium content online. I have both Netflix and Hulu+ accounts, and I spend an average of $10 a month on movie rentals and purchases at Amazon. I'm a new customer; an entirely new revenue stream. I didn't cancel cable to use Netflix. I used Netflix because it was the only way I was going to watch TV and movies at home. I'm where their growth could come from, and they don't want it.