What? I don't know anything about Dota so I can't comment. Valve are good, but they ain't this amazing company everyone bums them for being, they've done their fare share of bad things, that's all I'm saying. It's just meh hearing it all the time, they ain't as bad as say, EA or Capcom but they ain't the Messiah.
Infact when you take a look at what happened with Left 4 Dead, they are very naughty boys.
I wouldn't compare them with Blizzard though, they are much better than those lazy money grabbers.
What bad have they done?
As far as I'm aware they are a business to make money, yet have supplied fantastic product at ridiculously good prices always.
Not sure I'd call Blizzard money grabbers at all, I'd call them a business attempting to make money, but they still provide a quality product in Starcraft/WoW/Diablo (Yes it wasn't the game people were hoping for but it was still a fairly good game and most people got their moneys worth.)
EDIT: Oh and as for you don't know about Dota so can't comment, you happily did it in a thread before saying it had no lore/valve did no work/copied everything etc. So I mean you are happy to comment on things you don't know about until you are categorically proven wrong, Valve not being all that good is your opinion but your facts on other matters are a load of garbage.