You really think that Microsoft or Adobe spends 10x as much to support the Mac? If the ROI on Macs is so horrible compared to Linux then why wouldn’t Adobe or MS be dropping Mac support and instead support Linux?
Yes, platform-specific expenses are 10x on Mac vs. Linux and Windows. I said nothing about ROI. You're confusing that with platform-specific expenses.
ROI of platform = number of platform users * price - "platform-specific expenses"
Hopefully you can see why even if "platform-specific expenses" is high, the ROI of the platform can be higher than another platform, because the number of platform users is much higher.
