because it does not guarantee speed or better graphics. not to mention there's one constant in computers is that servers go down a lot. As for my statement of the tech guys my point was they would want Hardware they know would work over idea that is uncertain.
I've played on those 15k servers since live came online. To my knowledge they have never gone down. With the addition of 300000 I don't think it would ever be a widespread problem like when psn went down for a month or when everyone's credit card info was hacked on ps3 and they waited weeks to tell their consumers.
I think both systems will function near identical as far as gaming goes. Gaikae is a nice addition for PS4 if it can be pulled off just as all dedicated servers for X1 will be awesome if the developers utilize them.