Ah the days of https://en.wikipedia.org/wiki/Microsoft_NetMeeting I recall them so well. Desktop videoconferencing and whiteboard interaction was all about to go mainstream back then by many a manager evangelistic eye just far enough of the base of reality that it was almost believable. Yet still such things have to find a champion that rings true for all, let alone interoperability. Which is a shame as many standards out there matured over time.