I suspect Raven, like me, is rather a bit of a technophile. I know I spend a disproportionate amount on electronics and games. Not that I'm preaching; everyone expects something different from their personal computer and will draw there own line. There is certainly no right or wrong.
That said, I think we can agree on a definition for "platinum gaming computer," which I think could safely said to be a computer that is powerful enough to play demanding games for a few years to come. For a computer like that you can easily spend $2,000.
I built one just about 2 years ago with dual 9800 GTX cards, a quad core, a good sound card, water cooling, and a 750gb storage. The cards were top-of-the-line at the time, but the rest was a bit older and cheaper. Roughly, this worked out to a bit over $2,000 CAD, with the cards making up around 40% of the price. It's still alive and kicking, though my wife has banished it from the office because she doesn't like the way it looks and sounds, and frankly doesn't trust my craftsmanship! So now it lives it what is essentially a large closet.
Back ON topic though... or not...
Who remembers the Sega Channel. I remember a buddy of mine trying it out for a few months when I was 13?
Really back on topic, though. What kind of bandwidth is OnLive going to require to stream (even compressed) these visuals? We like to think of our bandwidth as unlimited here in NA, but that's not exactly true. If OnLive becomes popular and starts clogging the tubes we might see ISP start restricting bandwidth or imposing a premium on usage after a certain point. Or just increasing prices in general.