I'd just point out that brand allegiance has less to do with Operating System allegiance than timing. If you were quick to embrace the new technology, you had TMCC. I installed mine in early 1997. And once I had it, I wasn't about to buy, install, and run a second system that basically did the same things. And at that time I had never heard of DCC except that there were these guys at shows with glasses and pocket protectors who walked around layouts plugging in to jacks all over the place.
And the separate operating systems might have exacerbated the brand wars... as folks (like me) look at Operating Systems like the way we look at track: something that's necessary, but not worth spending a lot of money on... which is why I still have some 1940's era switches.
I'm guessing that internal Lionel customer research shows that folks would buy A command system ONCE... like a transformer. That's why they went to the LionChief(Plus)(2.0) model.
Jon 
