@Yodhrin: Well, if Elon presses ahead with this: Elon Musk says Twitter, now X, could charge all users subscription fees then I suspect Twitter's universality would quickly be history.
Although I actually agree with your basic point. My experience from the world of business is that once upon a time there was e-mail. Then text joined the party. Then Skype Instant Messaging, then Slack and Teams and on and on and on. Similarly, in the personal space there was MySpace - which at least had the decency to curl up and die when FaceBook ate its lunch - then people started to use many more non-obvious platforms such as Instagram, YouTube and Tik Tok for similar purposes. I know people who do everything through FaceBook - for them it is "The Internet". I know at least one company which only used Instagram for its social media feed - which was damn all use when they used it to issue an urgent product recall. It makes it ridiculously difficult to keep up with stuff, whether trivial or important, if you don't know which app-of-the-month it's likely to be published on - and even more so if every one of those apps requires you to register just in order to read something.
(Funny how populist nut-jobs seem to end up shouting to limited audiences in often controlled-access, if not simply rarely-visited, cocoons - see "TRUTH social", "GB News" etc.)