[dkfmn]

For [2] and [3] it sounds like Trace3 is a technology consultancy, integrator, and services provider. So the business is more like "specialized IT for hire" than a new product or innovative technology.

As a result, I'd guess that the $400MM is gross revenue over the life of the company (not annual), and a large portion went to vendors like Avaya and Rackspace that he set-up for the clients.

Then again, this is just reading between the lines, I have no direct experience with Trace3.