Why is Quickflix not on Google Play?

I have a Quickflix subscription and was going to stream Quickflix movies on my Android TV, but then I looked through Quickflix's devices and it looks like the Quickflix app is available on every single app store other than Google Play. Now I will have to keep borrowing DVDs from them. I'm tempted to just cancel my subscription and just stream over Google Play Movies. The only thing stopping me from streaming is the fact that DVDs from Quickflix are about $3 per movie, which is cheaper than most streaming movies from Google. Quickflix should understand that because Android runs on 80% of all smartphones and 55% of all tablets, they are missing out on a large number of customers by ignoring Android.