Their existence is a precondition for effecting positive change, but there still must be an "industrial base" to implement them. It turns out that ideas are cheaper than talent, but since the Bay Area has a greater concentration of talent, they dominate in the implementation of ideas.
If the Boston area wants to get ahead in startups, it's going to need to attract more talent than SF. Sadly, I've seen plenty of MIT grads head to Google and Facebook...and some of those kids are going to be starting the next wave of companies...