Auto-industry was a bad example. One could have easily entered the market for new production of any type of vehicle they wanted had the government allowed the big 3 to go bankrupt. At that point, anyone looking to get factories and labor to start production on their product in the near future would have had an incredible opportunity. Instead, the government went and fucked with the program.
Of course they could have. But if one person bought up all of those factories and labor, then the only competition is from overseas. A company could continue to grow and force out competition by being the most appealing option to consumers, until they were at a place where they were not worried about competition due to natural barriers of entry.
I haven't had time to thoroughly analyze them, but the following links seem to address my original question, if you're intersted:
http://mises.org/story/1800
http://mises.org/Community/forums/t/1318.aspx