In reality 70% of the people I see are using Cursor (Subscription), Vscode (Free) or some JetBrains products (Subscription). I only know of some people including myself that have ST for opening large files, where performance matters.
I'm a fan of indie software and native apps but I know zero people in the past 10 years that switched to ST. I know plenty of people of people who switched to Vscode and all the other free or paid competitors. It's probably enough to sustain a small company, and not everyone has to strive for a monopoly. But I wouldn't call that thriving.
People are 7x more likely to be using VS Code, which means that a niche tool is far more likely to have a VA Code plugin than an ST plugin.
Other than that, if the 11% of people using it are happy then there’s no issue.