Now the offline porn industry is a shadow of what it was. Their buyers moved to online. Sales for most in online porn are in the toilet (

) and the new bogeyman is piracy. Some think shut off piracy and sales will return. They have no logical reason for this.
Manwin are going after anyone stepping on their toes and more importantly stepping on pirates of Babes.com. For the same reason sales will not return for the vast majority, they will return to sites like Babes.
Because 90% of what surfers are offered today is similar to what everyone else is producing to offer them.
Producing a product like Babes, is hard and the people who like it will go buy it.
If they can't get it for free. Manwin is making sure they can't.
For the rest of the sites with content that isn't special, most of your consumers will be watching it for free on legal Tubes. Because besides the watermark it's indistinguishable from so many other producers.