^^ I didn't say that!
There are many things I don't ever need to demo first (The Beatles Rock Band, Futurama, Star Trek, Infinite Space, Final Fantasy, Tales games, classic RPGs etc).
However, I don't see why I (or anybody) should plonk down cash for entertainment that really doesn't suit me, based on their hype-bombardment machine successfully semi-convincing me I might like it.. (hi Glee, God of War, Killzone, REM, Batman Begins). So my downloading episode 1 of Glee was never ever going to equal any sale or rental whatsoever.
TLDR: I only download "Maybes". "Certainties" get bought, often day 1. Most "Maybes" get binned, and rightly so because on closer inspection, they're not for me. No sale either way!