Hobbyist v. Consumer is how I see it. Ham Radio guys I think 98% of the conversation is about the rig, how they built it, what problems etc.. If you're not part of the soldering iron crowd, you prolly won't set one up in the first place or do what's required to get a ham license.
PC has a hobbyist heritage. That's the exchange info, help each other out bit. It's become a commodity. So Joe Sixpack just wants to download or watch sports online. He doesn't really give a crap what a GigaByte is.