Mostly Windows, and construction industry. So projects generate anywhere from a few hundred to up to a hundred thousand files.

Everyone has their own filesystem, and then you often have one formal and multiple informal exchange platforms. You still have people throwing around stuff in E-Mails too.

It is a mess. But in this mess i didn't come acrosse people complaining they couldnt find a file because of the letters case yet.

I see that it could be different for programmers, but i dont see that apples solution of treating upper and lowercase as identical name is the solution there, rather than working with explicit file naming conventions in the program.