A modern heatpipe-based cooler + large, low-RPM fan easily deals with 100W power dissipation. Check out the new iWill dual Opteron SFF system, it cools mobo, GFX card (up to GF 6800 Ultra), 3 harddrives + optical, 2x90W Opterons + PSU with 2 80mm fans. That's it.
So your sugesting that they are going to put in 50$(if not more) cooling system in a 300$ console ?