Sometimes99er:
> The TI didn't come with direct access to machine code, which I think is why it took a route of its own (no demoscene) [...]
Perhaps, it is good explanation. But what about Apple II - as far as I know it has access to machine code, and was really popular. But till now it hasn't demoscene! Yes, there are a lot of prods on pouet, but most of them isn't demos (i.e. not a demoscene demos): http://www.pouet.net/prodlist.php?platform[]=Apple+II&page=1