Coil Over vs Torsion Bar

I've been following this discussion with much interest and can appreciate the pros and Cons that everyone is presenting. Great discussion BTW !! The one thing that keeps coming up to me personally is why , if torsion bar systems are cheaper and as effective as coils are.. why did the Auto manufacturers give up on further developing them for future models? Why does the Demon or Hell Cat not have them? Camaro, Vette Mustang ??, Why did no one develop a rack and pinion steering system to work with torsion bars?
When I was doing my research I could not find any reputable source for this product as I would have probably stayed with the torsion bars, having already invested in upgraded factory T-bars, steering components and K member upgrades.. I did see a few but they proved to be poorly engineered after thoughts and inherently unsafe. I finally decided on RMS (sorry Denny but I did not know about your products at the time) as everything I read and researched on their products was positive. Most of the other suppliers I found unknowledgeable, rude or dis-interested and after seeing their products, I know I made a good choice.
As everyone on here knows , Mopar Action has nothing good to say about RMS but has no back-up to show any failure due to the deficiencies they suggest are inherent in Bill Reilly's design. His product has been around long enough and with customers racking up enough miles that any design flaw would be showing up by now, especially with number of members here who are using it. Not taking anything away from Rick Ehrenberg's engineering analysis as this guy certainly knows what he talks about and is very proficient when it comes to all things Mopar but Ill make my decisions on tangible results, not theories or speculation.
Anyway, that's my 2 cents worth , having gone the upgraded factory route and then switching to a coilover rack and pinion setup. It was an expensive journey , I figure over $10,000 factoring in brake upgrades. My opinion?
Even if rack and pinion was available for torsion bar systems now, I would never go back. I am absolutely satisfied with my new setup.
I guess your unaware that multiple manufacturers have built, and continue to build models with torsion bars, and rack and pinion steering?