Check out Barry Ritholtz's prescription. I mostly agree but I'm skeptical it can work. As long as there are more people who think they can beat the system picking stocks based on watching CNBC it's going to gear its programming towards twitchy speculators. Yes, there will be a niche market for contemplative content, but it will almost certainly be dwarfed in size by daytraders for the forseable future.
Friends of mine who work in the financial sector say CNBC is on all the time in the office, but (a) the sound is almost always off, and (b) the main reason it's on is because the ticker is actually useful. So perhaps Bloomberg TV should get a better ticker and at least eat into that portion these jokers' market share.