Mumble is also self hosted, and nobody wants to host anything anymore when there's a free alternative that's good enough and hosted by someone else.
Skype is just universally terrible.
EDIT: since I'm part of that tiny minority exception that proves the rule: s/nobody wants/the vast majority do not want/
* Where the server is hosted / quality of server
* Poor client UI
The client UI issue is how easy it is to work-around bad audio from other users. It's possible to do, the UI just completely sucks.User interface and end user fulfillment just aren't great generally for OSS. I think it would take a commons improvement project with either government grants (infrastructure) paying for results AND/OR a university spearheading the development project.
Everyone I have spoken to loves discord and thinks it is one of the best programs they have. It's only a select group of hacker news style users who complain about minute details the average person does not care about.
I know it's hard for most people on this site to understand but the average user has very different priorities. Being able to create a "server" with the click of a button is worth more than every other issue listed in this thread. Having to pay or self host to create a group is a total non starter in 2021.
To say people were manipulated into using Discord is obviously not true, but it's also disingenuous to deny the massive amount of marketing Discord pushed back when it first started, not only in advertisement but just branding in general.
I'm not going to address the latter part of your comment because I don't understand what you're trying to say. I'm of the belief that I'm allowed to voice the legitimate issues I have with the software that impact not only myself and other developers but users in general.
You don't see how those valuable those improvements are but the average person does and that's why it has a massive market share.
The fact that you can:
(1) Find a server with a simple URL (no pw needed, no port or IP, etc.)
(2) Find your friends easily with a unique username and use chat as a fallback
(3) Create an audio room (that scales!) that has great audio quality (doesn't "drop" calls and
(4) Client that auto-updates to provide more and more features
All within a few minutes is a HUGE upgrade or Ventrilo.
This doesn't even mention the network effects, bot integration, gif/photo capability, etc. It's superior in almost every way possible.