The monopoly of political power exercised in Mexico for most of the last century by the Institutional Revolutionary Party (PRI) was accompanied by - indeed many would say based on - monopolies in the economy, both private and public.

The 2000 election of Vicente Fox as president swept away the PRI’s political monopoly but huge swathes of the economy - beer, oil, soft drinks, cement, television, electricity and tele-phony to name a few - are still dominated by one or at most two big companies.
…
There have been other successes. In 2005, the two state airlines - Mexicana and Aeroméxico - were hived off for privatisation and permits were granted for five new low-cost carriers. The following year, the number of air passengers grew by almost 12 per cent, more than in all the previous five years combined.

Flights from Mexico City to Cancún now can be had for less than $100. Previously it had been cheaper to fly to Cancún from New York.