Depending on what you're looking for precisely, there are quite a lot of real-world lists of commercial companies in various places on the old internet; if you're looking for a relatively minor opponent, just look up a particular industry and find a list of company names. Most have offices in various parts of the world. If it doesn't quite fit, tweak it......
For instance, I ran a series of commercial espionage runs for Boeing against Rolls Royce, Northrop-Grumman and Dassault, inserting information to look like commercial collusion between their aero-engine divisions. Decker-heavy, but lists were easily located.