Here is a great NPR podcast on it. But basically they tried it in California, people liked it, TurboTax didn’t and lobbied against it. They sent you how much you owed and you could verify it, confirm, and send it back super simple.

https://www.npr.org/sections/money/2019/04/03/709656642/episode-760-tax-hero

Another weird example would be r/soccer and r/football where soccer ironically became the defacto.