Even if Optitex were to go bust I doubt if Daz would add another dynamics engine to DS, odds are that the licence would block it, so Daz would have to remove the Optitex system from DS before adding another system, which would P off a lot of people as chances are none of the Optitex stuff would work with another system.

It's either carry on using the various hacks to use the Optitex system, or hope a 3rd party creates a built in system for DS, or use an external 3rd party system. Caused a bit of trouble when I posted this image over at Daz a couple of years back, a conforming dress that could be draped, Optitex did their nut when they found out lol.