User blog comment:Mistertrouble189/DEAD RISING 2: CASE WEST/@comment-2216139-20100916013041

My guesses:

Zombrex is behind both the Las Vegas and Fortune City outbreaks in order to create more infections therefore creating more lifetime customers. Chuck learns of this and heads to their base of operations to find everyone's favorite reporter Frank West has already learned of the conspiracy and also wants to stop it.

Zombrex becomes Dead Rising's Umbrella Corporation.