[elithrar]

> Why are people doing so much peer level file sharing anyway? Performance? Security? In a company it would be a lot better to have centralized servers with high availability, probably with some kind of web-based CMS to store files, something like Confluence or Sharepoint.

You have to assume that the majority of Apple's users are home/edu/SMB users, who don't have centralised infrastructure.

They just want to share files between each other, or from a small NAS. Those who have Macs in an enterprise environment likely have a working solution via other methods.