Netflix is not using the capacity, they are selling access to the content. The customers are using 35% of the traffic. The customers who pay for access to content they want. Most people want Netflix because it is a sea/wonderland of content and is replacing tv. Netflix is not consuming the content, they are providing it, the customers, who pay for the access, are consuming the content and bandwidth.
Content services should not be harmed for being successful. If the bandwidth customers are desiring certain content providers it is the bandwidth providers responsibility to make sure it is available and fast, per their marketing and products.