There are plenty of document-processing startups that help with what lawyers call e-discovery. There are also some startups that will help you do some standard legal tasks, like incorporate in Delaware and issue stock. I think one of those is Clerky, a YC-funded company. Avvo is a matchmaking/profile aggregation startup that comes to mind.
I worked with Fenwick and West to incorporate https://recent.io/, in part because I've had a relationship with them for a few years. But I see why people today use Clerky and pay ~15% as much.
A few other thoughts:
* Lawyers are some of the most conservative and risk-averse professionals you'll find. So it will take a while for any newfangled innovations to become adopted.
* Those "enormous fees" are already being whittled down as part of a multi-decade shift away from Big Law in its traditional form, including fixed fees rather than hourly rates.
* Bar associations act as a cartel and try to restrict competition. Nolo, which publishes self-help software and books, was actually sued for daring to compete with lawyers ("Unauthorized Practice of Law"): http://blog.nolo.com/blog/2011/04/11/the-brief-story-of-texa...
* When you want tailored advice, a website with a bunch of forms (even forms created by smart lawyers) is likely insufficient. I know one trust attorney in the SF bay area who told me she had to figure out how to handle cryopreservation after some Silicon Valley execs wanted it; that required original research. When you're in a situation where mistakes can cost you millions, hiring an attorney for tailored advice is cheap insurance.