It's almost as if the development of technology and politics are interrelated. Half the cost of building US airports were subsidized by the government when they added them.
Path of development and real estate prices are related to accessibility. Most of the US is not accessible, there are an equal number of paved and unpaved roads in miles. Consider receiving mail in a rural area where it's going to be 3-5 days for an amazon prime package and the closest store is 30+ miles. If you randomly sample locations in the US you'll find that is actually really common, it's just not experienced by many people. Rail networks aren't about going on vacation, it's about developing real national infrastructure that creates efficiencies that boost multiple parts of the economy.