Why didn't TZD ever release new games?

From <xxxxxx@aol.com>
Date
I have been thinking about this a lot recently, especially with 
companies like Telegames and even some private parties releasing 
previously completed but unreleased games for other systems (Atari 
Jaguar comes to mind).  Why hasn't TZD or someone else ever made an 
effort to try and license and release a few new turbo games?  There is 
obviously a huge demand and the number of turbo collectors is growing 
at a remarkable rate.  Does anyone have any ideas about this?