This is so much FUD. As a state we spend plenty of money subsidizing infrastructure in places like LA or San Diego suburbs, it just happens that everything is a bit more spread out, so no specific project looks quite as expensive.

Infrastructure spending in cities, even with big projects like bridges and subways, is much more efficient per capita than infrastructure spending in the suburbs.

Compared to the cost of cars, parking spaces, roads of all sizes, deaths and medical bills when cars hit each-other or pedestrians, CO2 emissions from gasoline engines, wasted time on long commutes, immobility in car-centric communities for people unable to drive, health effects of a sedentary lifestyle, etc., subways and other types of mass transit are an incredible bargain.

Beyond transit, consider the additional overhead costs of greater distances to get to schools, hospitals, police and fire departments, government offices, libraries, museums, grocery stores and all sorts of other businesses, or the higher per capita cost for electricity/gas/telecom/water/sewage infastructure, trash collection, street sweeping, etc. etc.