I am a classic railroading neophyte. The salesman told me that many of his customers have abandoned DCC and have reverted to DC. Now I am not sure if he told me this because he wanted to sell me a high-priced MRC DC transformer or if he was honest.
Perhaps HIS customers have given up DCC. I know people who attempted to buy a DCC system from a dealer that knew absolutely nothing about it, and without any support gave up on it. But more and more dealers do know something of it these days, although many of the ones who do are specialists in DCC and relative newcomers.
Andy