Realistically, Bitcoin ASICs are a very small fraction of the chip market.

I think you're only looking at the small picture. Start-ups, that aren't social, are already forming...

http://www.bizjournals.com/sanjose/news/2013/11/18/silicon-v...

Also, you're asking how Bitcoin mining, the use of technology, and SV start-ups will directly impact the future. I can't do that.

Of course, I couldn't tell you in the late 90's how a search engine company would lead to better self-driving cars (among other things), or how a company that made paying online popular would lead to electric sports cars and rockets.

I bet convincing most people that Likes and building a better social graph in 2005 would lead to any sort of innovation would have been a stretch too.

All of those startups combined are a small fraction of the chip market. And I don't see a Google/Amazon-like culture of innovation in these companies where the profits from a monopoly are invested to create new things. What I see are cutthroat, beyond-lean companies that are trying to extract as much value as they can in the short term, cash out, and move on.