This is one of my odder ideas. I'm not even sure exactly where it came from, other than creating a virtual world would be fun.
Basically, the business would offer a product: a virtual world (VW). Weird. Maybe. My target market was going to be to writers, video game designers, researchers, and the like. There would have been three levels of products: stock VW that could be resold again and again; one of a kind VW; and custom made VW.
There would also be various levels of detail, from basic geological setup, to ecology, to intelligent culture. The highest level would even include a simple constructed language.
The end result would have been a CD/DVD with all of the low level data, as well as a walkable VW.
While much of the process could be automated, who would really buy their own VW besides me? Yes, I'm weird.