SSB enthuciastics?

I have to wonder what ever happened to the old days when 4125kHz was the channel everyone listened to 24/7 on the west coast and in Alaska? I remember the very old days when it was channel 4A then channel 401. I guess the entire ITU channel tables are all now turned on their heads since DSC was introduced? I fondly recall Stephens model SEA 222 and the Icom model IC-M800 sets. They even still around?