When it was available for Windows, nobody used it, except web developers who wanted their website to work on Macs, but didn't have a Mac to test with.
These days with hidpi screens the difference between font rendering between windows and Mac is negligible though. So that's not a factor anymore.
When it was available for Windows, nobody used it, except web developers who wanted their website to work on Macs, but didn't have a Mac to test with.