Was this just an American thing? When did wigs and heels go out of fashion for men? When did the tricorn get replaced by the top hat?
Hi, there are a couple of interesting previous answers that are worth checking out:
/u/otherhypatia kicks things off in Why has men's formal wear remained largely the same for the past 125 years?
/u/chocolatepot discusses that answer further in this next thread, which also features an answer by /u/colevintage : How did contemporary, mainstream western ideas about fashion and gender develop?;
I would also suggest two more recent answers of mine:
How much did the Regency Era, and George Brummell specifically, influence modern menswear?