All this is very, very interesting.
At the one end of the spectrum we have all those individuals who, as expressed so well by mommoe436, want to be able to exchange ideas for finding the best personal system for themselves. This type of need can be satisfied by low-cost means such as forums (anybody's forum would do, as long as its focus suits the individual) or books (written by any guru you care to listen to) and perhaps the occasional seminar etc (more expensive).
At the other end of the spectrum we are talking about how consultancy firms can both make money and "help the world" by instilling sound management philosophies into entire organizations. There is no doubt in my mind that this is the more lucrative way to go for DAC. (From these organizations the thinking paradigms will eventually spread from the employees to their friends and family and professional contacts and "into the world" on a non-commercial basis, but this "leakage" is, I'd say, only positive.) GTD as such is not really designed for organizations, so it seems natural for DAC as a company to liaise with companies such as those mentioned my TesTeq - with Intentional software to influence and learn how facts and projects and goals etc can be most effectively represented in computer systems, and with Holacracy to both influence and learn how the governance of "circles" and "roles" and "domains" can be defined, and perhaps be able to bring back some of this wisdom into personal GTD.
There is no contradiction in catering both for individuals (with books, forums etc) and for organizations (management consulting and/or computer systems). Even if the corporate side is more lucrative, the individual side can at least be seen as a "paid marketing cost" for getting into organizations from their lower levels and up, i.e. an alternative/complement to advertizing or cold calling.
Although I find all of this extremely interesting generally, I think what really interests me most at the concrete personal level in the shorter time frame (1-2 years) is something in between these two extremes (i.e. between the enterprise and the individual marketing routes).
I think it might prove advantageous both to DAC and to "demanding individuals" like myself, if DAC were to engage (directly or indirectly) in developing a pre-packaged "solution" (books/teachings + software design franchises) that go beyond GTD and a little bit further into integration and longer term planning aspects (perhaps inspired by Intentional) and a little bit further also into role definition and "domain" paradigms (inspired by Holacracy). Although GTD and Holacracy are different things and for different people, they have some very important things in common. Both are "tension driven" (Holacracy's term, but essentially analogous to what DA is is talking about concerning what kinds of "stuff" you need to "collect"). Both are "opportunistic" and "dynamic" in the sense that rigid time planning does not form a fundamental part. Instead it is the natural awareness/tension, and the current situation, that drives projects and next actions on a "first things first" basis (an old expression; cannot be allowed to be monopolized by Covey.)
A clearly profiled mid-level solution along those lines might accomplish a few things. 1) There will obviously be some portion of the individual and small business market that will actually pay for this "solution" (if it is reasonably priced and featured; need not be as inexpensive as today's typical GTD apps, though). 2) Its very existence (and its clear description/definition) will also heighten the awareness of GTD's (DAC's) hallmarks (fact/"hard landscape" driven, momentaneous decisions rather than prematurely planned; dynamic in an orderly fashion) and may provide a clean-edge profile that has a stimulating effect both on individual-level and organization-level sales 3) The mid-level solution (text materials + apps) may also serve as a convincing sales demo of the fundamental principles for those large corporate clients who in the end really need a complete and totally customized package of management routines and extensive training (and/or perhaps even large computer systems integration services.)
