Why would you compare landlords to OPEC? One organization has the backing of several militaries, including ours, defending their market position by threat of war. If you try to sidestep them you could end up like iraq.
Price fixing in the market doesnt work, because rival landlords cant call the government to airstrike their competitors when they get undercut.
As long as demand exists for the product, cartel members make more money than regular market actors. Defectors can make even more money, but that behavior is going to either be irrelevant (if the defector is too small to Mather), or it will be punished - not by armies, but by other coercive measures. Bribing to return, denying access to other services, bad mouthing, even vandalism or illegal violence. The advantage of the cartel is too large to be allowed to dissolve.
And again, we don't have to guess. Cartels need to be broken up from the outside, they just don't dissolve naturally. This is basic economics, and a well understood weakness of markets. The idea that monopolies and cartels are too weak to resist in a market is not born out by either economic theory nor history.
> As long as demand exists for the product, cartel members make more money than regular market actors. Defectors can make even more money
These two are completely contradictory statements. "Regular market actors" are the same as "defectors." Fracking companies, for example would not be able to exist without OPEC driving up the price of oil because it would be too expensive.
Buyers are also market actors. Also, suppliers who haven't been part of the cartel don't have access to their pricing strategy, and so can't profit as much. Defectors know exactly for some time, and can use that information to beat the market and the cartel in the short term.
Price fixing in the market doesnt work, because rival landlords cant call the government to airstrike their competitors when they get undercut.