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Yep, Apple paid with shares (More specifically, the right to buy $1 million dollars worth at the initial share price) which, according to a share calculator I just tried, would be worth nearly $328 million these days, I wonder if Xerox kept them or offloaded them early.
Considering Xerox was utterly uninterested in any of the tech they had, it’s worked out well.
NTFS was designed back in the mid 90s, when the plan was to have the single NT kernel with different subsystems on top of it, some of those layers (i.e. POSIX) needed case sensitivity while others (Win32 and OS/2) didn’t.
It only looks odd because the sole remaining subsystem in use (Win32) barely makes use of any of the kernel features, like they’re only just now enabling long file paths.