Consolidation over the years has created limited competition among the below businesses:
Airlines - DAL, UAL, AAMRQ
Rental Car Businesses - HTZ, CAR, URI
Rails - CSX, BNFS, NSC, UNP
I was wondering why there was no mention of PEP or KO with is my favorite Oligopoly. Well maybe I did not get to see all the "Mad Money" episodes perhaps.