USB apple ? HUH ? USB was invented by compaq, DEC, microsoft, and NEC in 1993. I suppose those PCI slots that are so popular are apple too
Firewire was a joint development by texas instruments and apple, initiated by apple, adpoted in windows 98, windows 2000 and OS 8. If anything its the video makers that have brought wide spread firewire usage, sony , matsushita etc, after all the firewire board is practically all video OEMs
Macs are good for audio work they typically have considerably much less latency than PC's, which is why they are popular in studios, though PCs can be made in such a way the software is heavily developed and people don't like to switch especially since a lot of it is rack mounted.