They could offer a way to download a copy and steganographically tag it to hell with your id so that they know if you distribute it. You can "loan it out" by letting friends stream off your Plex or whatever. If you start selling that streaming service or it shows up in torrents, it has your ID on it.
Boom, you own it forever and you're incentivized not to over share.
Or you know sell DRM free versions and let people do whatever, but that probably has a snowballs chance in hell.