AAA is an abbreviation of "Almighty Administrator Anders". Anders Johansson created Tycoon Online, and was its first owner and primary developer for six years. Most of the basic concepts in the game were introduced by AAA.
Little known fact: map section (X:6, Y:7) in each city is a city (gray) section. It will take several hundred active companies in a city to open that section but, if it ever happens, players will see the road net spelling "AAA" in the middle of the section map.