They'd scream, and there'd be a rash of "this sucks, I'm quitting" diaries and then like 5 people who were going to quit anyways would actually leave.

Look at their site, 2 total ads on the main page, one per comment page.

They could bump that to 5 per page without breaking a sweat. There's their revenue.

wouldn't even have to do that, right now their ads suck...they are either "hey pay us $20-$30 to advertise on reddit", thanks for not using adblock, buying some reddit schwag, yay reddit, and once in a while you see Amazon or some anime shows ads.

that's it...why can't they go to Honda and get them to pay them money to promote buying a Civic? or Coca Cola? etc etc/

I don't use AdBlock very much, but I must admit that the "thanks for not using adblock" message made me to promise myself that I'll never use AdBlock on reddit.

Because the Reddit userbase they have cultivated is (IMHO) not a good one to advertise to.

The userbase is anti-consumerist. They HATE things like Coca-Cola. They hate TV. They detest adverts etc etc etc