Part of it is that the government has a lot of purchasing power. A lot of companies want to sell to government. Their contracts are subject to freedom of information legislation. If they were dealing with another company, that would not be an issue for them. Some companies may not want to bid on federal contracts because they're concerned about the level of disclosure they would have to provide on the workings or the methodology of the black box—i.e. “here are the blueprints, here are the circuit boards, and here's the way we make it do what it does,” as opposed to “we take these things, put them together, and the smoothie comes out”.
On October 20th, 2016. See this statement in context.