[bluejekyll]

Apple has 18% of the smartphone market: http://www.idc.com/promo/smartphone-market-share/vendor

And 7% of the PC market:

https://www.google.com/amp/s/amp.businessinsider.com/apple-m...

And greater than 10% in the US.

[wnevets]

Even those numbers don't exactly scream users don't care about compatibility.