We’re way of from the subject at hand, but driving at the left is not that rare. A couple of former British colonies drive at the left, too (e.g. Australia, India, and South Africa) plus a few countries such as Indonesia, Suriname and Thailand (https://en.wikipedia.org/wiki/Left-_and_right-hand_traffic)

I guess that’s 15% to 20% of the world’s population.

My point was that sometimes these decisions are made for other reasons than safety or practicality. Just as Windows OS keeps it window control on the top-right corner while macOS chooses to keep it on the top-left corner. Driving left or right seems to be more of a political decision (when Americans fought the British) just as the UI choices on Windows and macOS sometimes seem to be just to differentiate their product and make it difficult for the users to easily migrate to the other platform.

India alone is ~15% of the world's population, and we drive on the left. Although the number of drivers may be significantly less as a percentage.

Try it with Safari - it doesn't work. Safari only maximises the window vertically and not horizontally. That is why I said there is no consistent way of maximising windows on macOS.