One could argue it goes back all the way to what was arguably the first high bandwidth, 'real-time', one-to-many socially connective technology - radio. Before

One could argue it goes back all the way to what was arguably the first high bandwidth, 'real-time', one-to-many socially connective technology - radio. Before that, connectivity was a lot slower, and you wouldn't waste things like the telegraph system on frivolous things.