And if you make a new tool, you should go where the young (in the sense of experience, not age) developers are. Experienced developers already have their workflows all set up and don't try new tools as often.
Even if its inconvenient for those who don't have a Mac, from a business point of view, targeting the Mac is absolutely sensible.
Most people in the office have spent $100 on software that just customizes the OS, not even considering the other dev tools that they purchase.
As much as I detest OS X, IF I were releasing desktop software for-pay, I would focus on OS X ($ per user) and Windows (kids & college students).
What's your point? Most people have spent >$100 on going to a theater to watch movies, which is arguably a much worse way to spend money than improve your workflow.
Windows has much worse window management than OS X, and so does Linux. Just because the info is there, doesn't mean the Apple team should handle ever edge case and scenario ever.. that's why you have applications. Should an OS also come with a perfect and free IDE?
OS X is a nix that works well on a very specific puece of hardware. I am not wasting my time and sanity fixing some driver compatibility issue.
Off-topic, but what window management software did you buy? I use Spectacle (http://spectacleapp.com) which is free, and it seems to fit my needs fairly well, but, uh, I'll live up to your stereotype and admit that I'd be glad to pay for something better. :)
Speak for yourself. I'm always trying new tools as they come available, and was thinking that GitUp would be a fun one to add to my toolset. And then I saw "Mac Only" and groaned. I don't own a Mac, and though I will likely buy one soon (for iOS dev reasons), it will always remain my ugly-stepchild dev box, that I own only to do Xcode builds, not any serious development work.
I simply don't understand how so much weight gets thrown behind such a perverse walled garden from DEVELOPERS. We know far better than this and ObjC? Swift? Eat that right up. It's so unhealthy.
Yea, I'm a huge fan of the free hardware they give away when you download open source operating systems.