and they have exclusive licensing agreements that makes it near impossible to get the full complete data.
bloomberg terminal is not something that can be disrupted by open source, it would be similar to creating a google competitor by scraping alexa 1000 websites. it won't win them over.
I think almost everyone knows that fighting Bloomberg directly is not going to be easy but they can start attacking some niche areas, make it cheaper for others who cannot afford Bloomberg and start from there.
bloomberg terminal is not something that can be disrupted by open source, it would be similar to creating a google competitor by scraping alexa 1000 websites. it won't win them over.