>>1625207First world cities still use them. As they always did since the 1880s.
Murica was de facto ruled by a small elite of oil and automobile oligarchs for most of the 20th century. They spent absurd amounts of resources on destroying all alternative means of transport, made the populace slavishly dependent on private car ownership. Trams were among the first victims of their policies. Their urban centers are still suffering from that corruption.