i only beleave it when i can play it...

they made a very important presentation for their company,
i doubt that they would risk any serverproblems at this event,
and probably just had it connected directly to a local server.

In the end its all about network-with and stability. (and partly
the quality of the codec)
The software itself is not that mindblowing after all.

I also belive that one day we will use mainly remote computers,
but they claim to do all the infrastructure now.
This is very risky, especially for high quality content
such as gaming.

Also: 7 years are rather the waiting time for the reqired
broadband infrastructure in the US, than development time,
The software is not really that magical.