Bloomberg would be very hard to dethrone. It's key selling point is all of the data they have access to, which takes forever to setup integration with all of th

Bloomberg would be very hard to dethrone. It's key selling point is all of the data they have access to, which takes forever to setup integration with all of those providers. They continually expand data sources as well so it's not like they are asleep at the wheel. Finally, Bloomberg chat has strong network effects so even if you had all of the same data, many traders still wouldn't switch to you because they can't communicate with others still on Bloomberg.