We've of course seen no limit to the complaints by users that YouTube videos often get stuck buffering, despite blisteringly-fast connections. Most customers blame their ISPs, while most ISPs (or companies paid by ISPs) blame Google. The real reason is often the power and cash struggles going on behind the scenes over CDN and peering links, with last-mile ISPs, core network ISPs, and content companies like Google all sometimes playing a role in making your YouTube performance suck.