Daniel Eran Dilger:

Among these online movie rental competitors, Apple now takes 45 percent of unit share, followed by Amazon’s Instant Video with 18 percent, the Walmart-owned Vudo with 15 percent, Microsoft’s Zune/Xbox with 14 percent share, and other players (including Google Play and Sony’s PlayStation Store) splitting the remaining 8 percent (no other player can command more than a 5 percent share).

So basically there’s Apple and then everyone else fighting for second.