He's looking to make a small fortune,
out of a large one!
Snide comments aside:
Subrun or 2nd run is a declining market share. Shorter release windows before coming out on video are killing the 2nd run market. people now seem to be locked in to this 2-week sindrome, where if they don't see in the first 2-weeks, they can wait for video.
Specialty films like art or indie are worth about 10% of any market. So if you can live on 10% of 10% go right ahead.
Art, especially if they are under represented in the market, can be a profitable venture. One can also try to find a market that is being ignored like gay, latino, black, lesbian (it's separate from gay), Chinese, Indian and the like.
Sometimes if you are really good, you can poach somebody elses market. Like if there is only a really crappy art cinema, do it better and perhaps you can become better than they are.