Microdigital were always helpful to me, and they obviously had a lot of skill to get as far as they did. However it seemed to me there were a couple of fundamental flaws. Firstly once 32 bit RISC OS existed any hardware solution was not going to be economic and 32 bit RISC OS was only ever a matter of someone signing an agreement. Second I could imagine situations where what they proposed (ARM Twister etc.) could not work.
Business may be about taking risks but you don't gamble when you're certain to lose.