>>716166653
Because Battle Network is finished unless you want to deal with Patch running around with Hub basically retreading what Lan was doing except with a new MC. SF is at least a descendant far enough separated from Lan and Patch, could answer what happened to Hub after everyone got rid of their PETs, and also follows up on SF3 being a strong game.

Plus, they also had an idea of what it was going to be about and concepts.