Yup, Apple's hoarding strategy will usually come back to bite its ass; it happened with Macs, it's happening with the iGadgets. However:
"Apple would be all but gone were it not for Microsoft releasing office for the Mac,"
IIRC, Office was *born* in the Mac. A lot of people in the Windows world suddenly got their Word 2.0 upgraded to "Word 6" ... what happened to the other versions? Oh, that's because "Word 6" was MS standarizing the version numbering on all platforms; Mac was already on 5.1 while Windows had only "version 2".
Hell, Word was the poor man's productivity app, we were all using Aldus PageMaker those days. A lot of "desktop software" was born in the Mac, and had Apple opened up in the late 80's-early 90's, we would all be using MacOS by now, and RISC-based PPC machines instead of the x86 garbage the PC industry got stuck with.
Oh well ... lost opportunites. And that was without control-freak Jobs in the helm; these days it is *less* probable for Apple to open itself up.