They did.

The initial CPU target for BeOS was the AT&T H0BB1T DSP. The alpha copies were called Shark. I actually have system images for the hobbit builds still floating around somewhere. I never did get my hands on a prototype hobbit bebox, sadly. I almost bought one off a guy in France but the deal fell apart.

Be produced a regular PowerPC version that could be installed on Macs (I think it may have required PCI macs?) and then an x86 version that was 32bit only and had a lot of ... quirks. But I used it for over a decade.