I humbly submit my own science-fiction-like vision of computing--not in ten years, but substantially in the future: http://www.praxagora.com/andyo/fiction/hardware_guy/ Admittedly, this is mostly for fun (and to make some other points) and not to answer the specific question.

It is not enough to recruit experts (with or without pay) to write, because they can't keep up with changes--I found that out working on books about Linux at O'Reilly. But it is not enough to ask the community to contribute micro-documents--that causes everything comes out disorganized and of wildly varying quality.

My most comprehensive article on the issues is:

http://praxagora.com/andyo/professional/community_author_collaboration.html

Much more for the curious at:

http://www.praxagora.com/community_documentation/

At FLOSS Manuals (http://flossmanuals.net/), where I volunteer, we're filling the gap with well-organized writing projects combining peer review from the public with experts from various free software packages. There's a very active mailing list and a lot of highly praised output on the web site.

(I may go back to one of the articles cited in the posting and add this comment to it.)