Why are anime fans against buying anime?

Out of all the hobbies and fandom out there, anime fans are some of the most backwards people I know. It's the only fandom I can think of where it's members actually encourage each other NOT to support the very thing they love. Why is that?

I like how this all fell apart at the end here.  I have a related question, however.  The companies that license and distribute the show in the US, all they need to do is get retailers to buy large amounts, right?  I mean, they don't really rely on the consumer to actually purchase the DVDs, just the retailer.  Theoretically, then, the dvds could languish on shelves in Amazon's warehouse for years until some pirate cleans up their act and purchases them.
Pick this apart, please.