Start with a specific county
(Software will give you a perfect geo-tagged list of the cities and zipcodes inside that county.)
rip out that specific county
(Start hammering away at that county until you have saturated it with every local service you want to take over.)
Replace county with zip or city...
( Again, perfect ability to drill down to that specific area with perfect geo-tagging, and you just systematically overtake it.)
Covering the entire state
(you would be rich before that point). Once you hammer that state into submission, you go on to the next and so on.