When fibre optic gets put in at the main box

[Jin]

And on demand 4k when we get that also (I can hope..), and streaming 3d means double, the increase in devices using the internet etc.

I'm fairly certain that when the internet was first envisioned they hadn't even considered images, let alone HD Videos. We're certainly not nearing the end of the tunnel.

Services like OnLive and on demand 1080p streaming perhaps?

From the last case study which was given to me (and by given I mean thrown at the side of my head) stated that HD streams require a connection around 10-12mb/s, sadly they didn't quite specify what they meant by HD, even so that would mean that a 50mb connection could potentially allow 4 simultaneous streams.

Don't get me wrong I can think of lots of great uses for 100mb or 1gb broadband but not many which wouldn't be considered illegal or break the T&C of my provider.

In terms of 3D side by side format wouldn't make a difference it would be about the same as 2D HD bandwidth but frame sequential 3D would be an issue and I don't think any network architecture in the consumer world could support that without a massive overhaul.