If Grant C's business is that good, I would think he would have an apprentice gunsmith or two. But if Colt will not support the repair market, there won't be anyone qualified to work on Colt DA revolvers left.
Even if Colt produced a "Python" now, it won't be the Python of the past and people will just continue to buy the "used" ones leaving Colt hanging with their new product that is expensive. In my opinion, there simply is not a market for a factory produced Colt Python.
If Colt did bring out a revolver, it will likely be a small carry type revolver. I am not holding my breath.
I would hope that Colt eventually will make or have made some more hands for their older double action revolvers. It can't be that hard.