Haiku retained all of this and bring something new like combining various windows into single tabbed one - not sure if any other system has such feature. Or... toolbar in file manager - which is something I really missed back then in BeOS.
Back then BeOS was much more stable and faster than my daily Win98SE, even working in that image file on FAT32 partition.
Kinda makes you wonder, how things would go if Apple would pick BeOS as their OS instead of Jobs' NeXT. Would it still looks same or it would go thru all stages we've seen - with glass, transparency and then flatness and darkpatterns producing minimalism.
In retrospect though, the company wasn't making a technology decision. They were making a decision between Jobs and Gassee. Jobs came with NeXT and Gassee came with Be.
I don't think the technology mattered that much in the large scale of things. Jobs brought with him a strategy for moving personal computing from a technical market category to a fashion market category - either to make technology fashionable or to make fashion technical (however you want to look at it). It's a strategy that started with candy-coloured iMacs and ended with iPhones.
Gassee brought a really cool OS.
Apple made the right choice.
Yes and no. The core of the purchase decision was really based on the technology. Ellen Hancock (Apple's CTO at the time) actually did a decent analysis of BeOs and NeXTStep. She was actually against some aspects of the purchase, and was not in favor of Be. She was also not in favor of the NeXT kernel. It is painful to say as a Be employee at the time, but Be internals were fragile, some technologies were very shallow, the kernel was brittle and under constant churn and we had big problems with our decision to have a C++ API. Gil Amelio liked Steve and Steve did a good job selling both a vision and the NeXT technology. BeOs was a really cool demo that was getting pulled into the direction of a real OS but had a long, long way to go. There actually was a possibility that Apple could have also gotten the Be code, but the board didn't go for it. As it turned out, most of the primary BeOs developers ended up at Apple via Eazel. The ones that didn't ended up at Google via Danger Research/Android.
It was uphill all the way before that point, and downhill ever since.