Don't get me wrong, I will have sympathy for the Altitude Sports Entertainment crew if Altitude goes under.
I don't necessarily know what the answer is, I suspect that someone like McGahey will be fine because I don't anticipate radio going away anytime soon (weird to say lol); but I remember McNab and Kelly calling games when the Avs were on Fox Sports: Rocky Mountain...so I guess I'd just assume that if RSO's go away, and Altitude goes under/goes away, then each team could hire their own PBP & Color Commentator and utilize them for the NHL's purpose.
Like, let's say all RSO's go away, or somehow the NHL gets the memo and creates their own streaming service without blackouts, then each team can just utilize their own people for the home/away broadcasts.