Is the U.S. is a rich country with the symptoms of a developing nation?

In the U.S., ..."there needs to be a national focus on reducing excessive costs in key industries, improving the population’s health, increasing density in the country’s sprawling cities, upgrading public transit, and reducing corruption and waste in both the public and private sectors. If the U.S. wants to remain a developed country, it should try to look and act more like one."
https://www.bloomberg.com/opinion/articles/2019-02-21/u-s-is-a-rich-country-with-symptoms-of-a-developing-nation