Feet is right in pointing out that if the O scale manufacturers would have come up with a standardized control system years ago, O scalers wouldn't be in the mess we're in with PS1, PS2, PS3, TMCC, early Legacy, current Legacy, and Lion Chief series. Rather ridiculous when you think about it.
And although Breeze is also right in suggesting that it is what it is and that we can't do anything about it now, a standardized control system that HO an N scales have had for years, sure would have been nice to have in O. An airline pilot friend who's been in HO for years just chuckles when ever I mention something about Lionel's latest Legacy features. He has all standardized DCC stuff, including lights, sounds, wireless hand-held remotes, etc., and it's rather impressive. Not to mention a more realistic looking layout with 2 rail track instead of 3.