LC, I think I know why!
The periodic lay-away-plan for which your systems are developed are meant for investors that may at most be able to put small amounts away as savings. Such plans are quite universally available although they lack the acceleration feature of the AIM-concept. As you remember we discussed years ago the idea of working together on formalizing the marketing for such lay-away-plans.
I even developed a Vortex variant called PremiVest. In this the lay-away investments would be accelerated + or - much stronger than any of your systems. . .I used the buy-sell aggression factors to make for example from a base investment increment of $ 100 a trade of $ 150 or $ 200 as prices dropped and say $ 25 as the prices increased, to possibly a sell of $ 25 or $50 or even more for a steep rise.
The resultant is that PremiVest Method is not any simpler than the standard Vortex Method that requires say $ 10000 to work properly. Typically the people on this forum would tend to invest $ 10000 or more per fund. If one only has, on the average, $ 100 to invest per month then they would not be interested much in spending a lot of time on their AIM-Lay-Away- Plan Management. Investing $ 100 per month does not justify the time spend on a complex system. I never got any inquiries on the PremiVest option, and even I ceased to be interested in it so I am not selling it now.
My explanation is that AIMers have generally "loads" of money and time to invest compared to people that can just manage to set $ 100/month aside as savings. . .they do not want to spend time on investing at all. . . . generally. . . they already have Automatic Investment Management: as prices are low they get more units for their $ 100 and the fact that they get less units per $ 100 at high prices does not bother them.