That's it.
There is nothing else. They managed to do one thing well.
This thing that skype used to do correctly but now don't.
This thing that no other free softwares seems to be able to manage correctly either. Not teams. Not hangout. Not Jitsi or BBB.
It makes you think.
We use Zoom internally, some customers are on Webex, still others use Hangouts.
Webex has been having difficulties ever since the mass exodus to work-from-home. Audio quality especially has been inconsistent over the last few weeks. Hangouts is pretty good from a quality standpoint, but I (and others, apparently) find their UI confusing.
I've never been asked yet to use Jitsi or any of the other also-rans.
Maybe it depends on your timezone, but I honestly haven't noticed any issues at all with webex.
One of my colleagues was complaining about it the other day - I asked if he was connected to the company VPN, and sure enough, he was. Once he disconnected, he said webex was back to normal again.
Like many others, our company has had to quickly buy a lot more VPN licenses, and is finding out it doesn't have the bandwidth to service everyone using the VPN.
Webex has been having some issues but has done better the last few days.
Zoom has been OK, but with some audio cutouts yesterday.
The one Hangout I was on the video and audio quality was horrible.
Teams seemed to use tons of video bandwidth, looked good, sounded good, but seemed to use excessive network bandwidth. It's video quality actually seemed excessive for a lot of use cases.