In less than 50 years, Chicago went from a town of fewer than 5000 to the second largest city in America, with well over 1 million residents, yet during that period: a) Skyscrapers didn't exist until the end of the period b) Mass transit as we know it didn't exist until the end of the period c) Half the city burned down in a single fire, leaving more than 100,000 people homeless

My grandfather told me that his commute from Santa Clara to Lockheed in Sunnyvale involved mostly driving past orchards all through the 1960s and into the 1970s. He left the area in the 1980s, saying that traffic and livability had become too much of a problem. It's been decades of intentionally not addressing the problems - nobody can reasonably claim to not have known or anticipated.