For a company, they are also extremely unsafe grounds to tread. Unless really over the top like Wednesday, there is a strong risk of ruffling feathers with jokes that will be deemed offensive. Someone said that humor didn't convey in print and its very possible to make a mistake and "that was just humour, sorry" won't work. Which doesn't mean one can't have humourous game, because knowing your players you know what is fun for the group. For WotC, trying to be a multinational mainstream company, is this worth the risk? I'd say no, unless going from the blandest of jokes.