The JOBS Act was signed in 2012. Why is it taking so long for crowdfunding to take off?

I may be misunderstanding your question, but statistically Crowdfunding has exceeded every expectation in record time. CF has gone from a space synonymous only with Kickstarter (rewards and donation) supporters pledging an average of $35, to a dynamic marketplace where non-accredited investors previously left out of early-stage investments in promising startups can now invest alongside institutions and venture capitalists without betting the farm. 

Crowdfunding has not only bridged a previous chasm between Friends & Family ($20,000 typical startup funds) rounds and venture investments ($1m), but now eclipses typical VC commitments and is well into the realm of initial public offerings (IPO). Regulation Crowdfunding (Reg CF) offerings can raise up to $75m...PER YEAR!

Hope that dose of reality helps you view Crowdfunding through a softer lens.

Thanks for posting!