(Part 1 of 2)
Hmmmmmm, I wonder how much of this is a definion issue, such as the comments above stating that the two major options are heavy industry or a "colony" (presumably in the economic definion, not the political "imperialism" sense). I think we may have differing views of the required scale of an early-stage AS community.
I'm going to break this out into two posts, because I think the analysis might be too much for one post.
Realistically, any large community that we would be discussing needs one of two things, a "critical mass" of an internal economy that would gainfully employ it's residents, or two, an external source of employement for the majority of the residents. A hybrid case would probably work as well, where a material amount of the employement "units" (measured in Dollars, Euro, Yuan, FTE, hours, etc.) are provided by "export" businesses that are aligned with the hypothetical community.
In the "critical mass" case, the majority, if not a super-majority, of the employement "units" need to be provided by internal demand. Without getting deep into macro-economic therories, the number of residents required to support such demand is likely to be outside any reasonable short-term projection. Thousands of Aspies are not going to get up and move to (Insert Location) tommorow, and manufacture an economy from whole cloth. It is just not going to happen.
In the case of an external employer(s), lets call it the "willy wonka" case, you would'nt need a "critical mass", you'd just need employees for the employer(s), who may or may not have a direct relationship with the AS community. In this case, you'd need some sort of highly improbable set of events to create an instant labor shortage, or have to have a set of employer(s) who have large amounts of capital, and a limited supply of labor. This is almost as unlikely as the 'Critical Mass" case.
I believe that these examples below are what people are refering to when they take the position that an AS community is not possible. I aplogize if I am putting words in anyone's mouth, but this is my understanding of the issue.