Spotify also doesn't pay the artists enough for most of them to survive. Studios know this. They know that $10/month isn't enough to support the creation of all the original content that has been supported in the past by $100/month.
I have a hunch that studios will find a way to pocket about the same amount of money that Spotify already does. Just based on the reports of how they treat non-superstar artists already with hollywood acounting [0].
They want more money for the studio to survive, not artists. Artists are probably "a dime a dozen", and possible to manufacture from a studios perspective.
Now I'd probably just stop watching movies. Others will start pirating again.