It prevents you from running Windows XP on it, for sure. Linux is a different story. That can be adapted to work on almost any Von Neuman machine.
I don't think the XBOX1 was meant to run Windows 98 either. My XBOX + A Bigger HDD + a Mod-Chip + The Necessary Programs = Windows 98. This equation has obviously worked well for others.
It's easy to say this system can't be hacked in anyway because it's so new, and with the given time we've had so far, we just don't understand the architechture.
Never is easy to say, but in given time, this system will have clear cases, chips, lighting, and plenty of exploits for the whole party to grab at. Every system has had a taste from a hacker, 360 is just standing next in the line.
A system with 512mb of ram and 3 CPU's running 3.2ghz each [combined total of 9.6ghz all together] is more than enough to make Windows XP cry, it sure has made my
computer do so.
Patience people, patience.