I have a feeling this isn't true. I'm sure if they released DRM free movies you would simply balk at the cost and then use that as justification for not purchasing it.
You might claim I could still do this legally, by renting the other films I want to watch at $3-4 a pop on the same apps (e.g. Amazon video). But no, that won't work either. IMDB tells me that less than half of the movies I want to watch are available to rent from Amazon at all, even if I could afford the thousands of dollars it would cost to rent them all. And since catalogue overlap for rentals is nearly 100%, I have little hope that I'll be able to find any significant portion of the remainder somewhere else.
Even if e.g. Netflix somehow magically had every film I want to watch, it would still be a miserable experience, because since they don't like my browser / OS / hardware combination, I'm limited to 720p streams at 3000 kbps. That's noticeably bad compared to a Bluray.
Not everyone's film interests can be satisfied with the top five Disney films from each of the last 10 years. What piracy means is the ability to watch anything you want near-instantly for free in the highest quality it was ever released in, if not higher (pirates not-infrequently correct mistakes made on commercially mastered Blurays). And even some popular stuff (like the original non-special-edition Star Wars trilogy) isn't available at all, you'd have to pirate it.
At least nowadays we can still get most content on DVD. It just feels like a waste with the physical media.
I am 100% in for paying for the films/shows. Just give me a convenient cross-platform option to do so without any BS