There is absolutely nothing special about BeOS compared with any of the modern alternatives that you list, or Windows and macOS for that matter. But this was 1

There is absolutely nothing special about BeOS compared with any of the modern alternatives that you list, or Windows and macOS for that matter. But this was 1995. Linux (or BSD) on the desktop didn’t really exist, Apple’s OS was System 7.5, Microsoft’s was Windows 95. BeOS was a preemptively multitasking, multimedia operating system, with a transactional file system. Nothing else like it existed, at that time.