Analysis of information sources in references of the Wikipedia article "Economic rent" in English language version.
Santa Monica's residents were being afforded too many choices... a population of 84,000 was served by 454 licensed taxis... City experts settled on a franchise system: Competition would be limited to five cab companies. The total number of taxis would be fixed at around 200. The biggest losers, besides the Santa Monica residents who had a tougher time finding a taxi, were the single proprietors who'd bought taxis and earned their livings in the city only to be told that they were no longer welcome there.