Already in the works, and some browsers don’t today (eg Safari). They permit the default system fonts (eg Helvetica) but nothing more from user space.
In the future it will be a permission you grant a site: https://wicg.github.io/local-font-access/
It’s a great move. The benefits of local fonts are negligible and the downsides are clearly enormous
It would be lovely if all web developers could just assume that the entirety of google fonts is at their disposal in a native way without having to resort to webfonts and the overhead that brings.
It takes a lot of work to draw a reasonable large set of all the Unicode characters for a given language. Time is money and fonts are ridiculously expensive.
That being said, Firefox has funded a few fonts over the years but they don’t bundle them with the browser. Google has a huge collection but doesn’t bundle them either. It makes more sense with Google as it can collect user data from its WebFont as a service system.
Many other features that safari has been late with have basically no fingerprinting usefulness like web push.
Surely there would be issues with such a scheme.