How do you know the number of people that want this, and how large is the number of 'enough', and what other numbers come in to play? (Number of incidents, number of happy users, number of systems to support, number of binaries to consider during upgrades, number of sales... and is 'enough' a percentage? An absolute number? And how high does it need to be? And to what degree does it need to align with the goals of the product teams?)

My gut feeling would say: a bunch of hackers would be happy if they can hack on their code on Apple hardware but run plain FreeBSD or Linux while doing it. But that is not something you run a multi-billion business on...