[Taqwus]

I'd think that the bigger obstacle to expanding the market is that the target audience is, frankly, quite small. The number of people willing to invest the time and attention necessary to enjoy games of this nature is far, far smaller than the market for more familiar, intuitive, prettier, or shorter instant-gratification games.

You wouldn't expect World in Flames, Advanced Squad Leader or Combat Mission to sell like hotcakes if priced at $10, either. Few people would play them, even if they were free, because it takes a fairly rare bird to enjoy them. For their audience they're quite good, but that audience is small.