I think a lot of these assumed loses are fanciful. Legends in their own minds with lost fortunes. The major mainstream motion picture industry well have to adapt to a new release model and adjust protecting new release video bricks n' mortar locations -- they are quickly becoming irrelevant.
Protecting new content better -- preventive action will be the only remediation. What has been already pirated is water over the dam
it's gone ...
Using piracy sites to promote video content is dumb -- you only allow them to continue in business. For example: if some of the adult piracy sites just had old stale content their traffic would dwindle and they would be little incentive to buy ads
The advertising market place would change it's traffic pattern and the advertisers would move their money to the traffic.
Another example: If porn paysites lowered their subscription price from 29.95 to 11.95 (even 1.95/mo for the first 90 days then 11.95) for an trade-off of members section site ads they could take the ad revenue away from the piracy sites -- without that revenue piracy sites would die off. If paysite networks sold ad spots on their tours they could better monetize. 98% of referrals to a tour do not buy so if the ads are not in direct competition the assumed loses are imaginary.