Interesting. That has activated more questions in my noggin. Now I am more curious than anything how much each of the OS and browser vendors are paying in royalties. Beyond that of course there are browser forks usually managed by a handful of developers volunteering their time. Are those forks a legal ticking time bomb? I would be surprised if they strip out the code for the non system fonts.
Those are still out there because the licence for those specific files remains legitimate, though a 21 year old typeface is not necessarily a useful thing anymore.
That package was used as the basis of "nonfree" packages in various distributions, that would download the MS archive file and unpack/install it.
I also wonder about how much Monotype charges Microsoft.
Ubuntu of course paid for their own system faces to be designed (which I like but not enough to use on my desktop). And Firefox has its own core font family (Fira), for example, that it can use in its own products as an alternate (I think it was designed for the late not-much-lamented Firefox OS)
