I'm not so sure... given the (apparent) network effects, and the fact that (I assume) Bloomberg users aren't going to be too price sensitive, you're unlikely to make a big dent their user-base anytime soon.

What you are likely to do though is bring in new users who were price sensitive or who couldn't justify $20,000 for their particular use-case. For those who wouldn't spend $20,000, $2000 is a lot easier to swallow.

So instead of taking Bloomberg's market, you'd be more likely to create a second tier of service.