I'm not watching game of thrones, but I can't quite see the connection here.
The argument doesn't really depend on people finding they have to view something.
They want to view it, so they look at the offering, which is illegal with bad customer experience or legal with better customer experience. They weigh their options according to their preferences, illegal VS legal, ad riddled pages vs smooth experience, having to find out how it works vs having it work in the TV out of the box. And then they will check the price to see what is the better trade off for them.
A good customer experience like Netflix will increase the odds that someone won't go through the hassle. Then if the price is reasonable people won't on average decide for the illegal option.
The problem for Netflix now is that a lot of third parties like Disney retract their content. This raises the price and worsens the UX, because you have to go through multiple subscriptions. This again raises the probability of pirating.
This is all just basic economics, not a moral argument.