Most North American cities offer only basic public transit service, with limited coverage and frequency, modest speeds, unattractive waiting areas, poor land use integration, and few amenities. Such service is used primarily by people who lack alternatives. In such communities, riders tend to abandon public transit as soon as feasible.
The Olympics can be awesome for cities. Or they can be devastating. Rarely they're both, and most often they are an economic drain caused by over-investment in facilities with limited long-term usability. So when London's plans for a 2012 Summer Olympics stadium that would reduce from 80,000 seats during the games to a more realistically usable 25,000 seats after, Olympics experts, city officials and taxpayers rejoiced. But recent news has turned that rejoice to disgust.