Well a lot of crap that isn't worth of fansubbing gets fansubbed, and a lot of crap that isn't worthy of TV gets aired.
The point is that there is a perfectly feasible way to make money off anime completely independent of DVD or online sales, without requiring any sort of real commitment from the casual fan.
And truth is, any fan of a fansub is likely to watch the same series if it's on TV, even if they're a sub-whore. See: Dub-Note threads. So in a way, the industry IS making money off of fansub fans even if they never buy a DVD.
I still believe the answer to this issue is blindingly obvious. As the guy in the article says, if a couple of nerdy no-life fans can get a show subtitled and distributed to 10,000 fans in a day, there's no fucking reason the anime industry can't do the same. They're just too afraid to do it.
Viz took a good step when they put Dub Note on their website, amongst other animes, and people did watch it! And even better, Adult Swim put the same videos on their website too! And they're making money!
Gee, the system works! Why not do it?