Had they run 5/5 Mbps or even 9000/5 Mbps, then they would of hit the same ceiling of active VC connections. Biggest issue with video over networking would be

Had they run 5/5 Mbps or even 9000/5 Mbps, then they would of hit the same ceiling of active VC connections. Biggest issue with video over networking would be bit errors as those micro delays of retransmission of if just sending without error checking, you will notice the impact. Audio a single bit error and you won't notice, networking you won't notice as all transparent or insignificant to notice. But with video, artefacts stand out hard and a single bit error can do that. I did Video-conferencing in the late 90's and 128Kbps H320 VC link's worked for most and if you wanted to roll-out the red carpet you would bond 6 channels for 385kbps and that was with dedicated ASICS using codecs far weaker than what you can run in the background upon today's disposable CPU's and that shows how far things have moved in raw processing power. Back then to do conference calls you would need a MCU (Multipoint Control Unit) and those would be many hundred of thousands. Today, you have all the raw CPU power to do that on your mobile phone.