"Just ask video libraries and bookshops how the internet changed their business model."
As an aside however, consider the current media attention being paid to breaches of a some well known entities' IT business platforms and you've got to wonder how long businesses will continue with online meetings after the first major business or government seriously confidential online hookup is hacked and then announced to the world. Most of the entities currently threatened with 'unknown sourced' intrusions already have reasonably robust defences and yet they are being hacked and breached with significant effect - to them anyway. Think Lion Nathan in recent days.