The race was already over by the time webOS showed up. Even Microsoft, with a superior product and many billions spent pushing it, couldn't overcome the network effects of iOS and Android. No one else had a chance.
Comcast and AT&T still exist. Kraft still turns out war rations by the warehouse. Tasteless grocery store tomatoes are still the most widely available.
LuneOS - the direct continuation of WebOS development had a release in Feb 2024 and is still under active development: https://webos-ports.org/wiki/Main_Page
Pretty good for something that supposedly failed 12 years ago.
Both Microsoft phones and WebOS have surviving communities today, and would have thriving communities if new devices were available.
Sadly, it takes more than two consecutive quarters to establish a platform.