This is actually a larger problem that has to do with lost licensing negotiations and residuals. For a place to offer up streaming, they have to know they can license the content.

But oftentimes, that production company is closed shop. They've sold the licenses off to someone else, who split it into something else. And then there's the music rights. The whole thing becomes extremely complicated.

There's a whole set of movies that were somewhat popular that you just cannot find streaming. 100 cigarettes and Woody Allen's Crimes and Misdemeanors are good examples.

I'd say if they can't figure out the rights, just put it on YouTube.