"The existence of DCS as a separate control system is because Mike Wolfe refused to "partner with" Lionel and use the then-existing Lionel TMCC control system, like Atlas O and 3rd Rail did. He insisted on developing his own control system, apart from Lionel. As a result, there are two different O gauge control systems."
While this certainly complicates things, at least the 2 systems can peacefully coexist on the same layout. The bigger problem IMO is the refusal to continue production / support of the designated remotes. We hear the "obsolete technology" excuse a lot but consider how long the Lionel ZW has been around and how many people still use it.