I wish Stackoverflow included "daily operating system" in their surveys, but I'd wager that 50%+ of professional developers use MacOS. For many reasons probably, but for me it's simply because it's a nice BSD system that translates well to Linux servers (prod).
> but I'd wager that 50%+ of professional developers use MacOS
Ok, I will take that bet against you. If you think it true, then you are living in a bubble. Probably 90% use MS Windows with no choice, because they work in a big enterprise that uses MS Office and Exchange/Outlook. For enterprise email, is there any competition at this point? I don't know any.
In that case, I would take your side of the bet! US startup devs appears (from HN) to have pretty liberal hardware policies. If choosing a laptop, many will choose the best hardware, which is currently a MacBook.