In the future, your CPU and the software you run on it can be in the cloud. All you really need is an audio and video interface along with your clicks and key-strokes. Since bandwidth is only going to increase (we're getting Google Fiber here in Nashville!!), the requirements of audio and video will only need to go as far as your eyes and ears can detect. Once bandwidth outpaces that, it's all rudimentary.
20 years ago, I had an idea that until only recently has become a reality. A Digital snake! Yep, all I needed were the A/D and D/A converters to do it the rest was easy, since the bandwidth needed was fixed, and the distance for the fiber was 1500 feet! I worked for a telecomm firm that was heating up the market on fiber technologies in multiplexing, so, if we could do this for data, it wasn't really that difficult to make it happen in the Live sound arena. Now we have MADI and such services, many of which I personally believe took a LOOOONG time to evolve. Technology is swift in some ways, and painfully slow in others.