But that's the US fighting for a peripheral interest. If US lost it doesn't matter, it just loses some influence in the Middle East. PRC vs. ROC would be an existential total war right next door thus tiring out of regional allies would not be an issue. If the ROC wins, the PRC might fall, thus the PLA has every motivation to fight to the end.Without the ground war, Iraq would have survived because just like in WW II, the US had no stomach to conduct a protracted air campaign based out of regional allies, and eventually, they would tire of that protracted air war as well. So even though we did stopped at 100 miles from Baghdad, the ground war was destructive enough against the Iraqi Army in that we broke their will to fight. Without an invasion of Taiwan, China cannot keep lobbing missiles at Taiwan HOPING that the Taiwanese will surrender.
US also bombed sanitation, dams, telecom, oil refineries, etc in Iraq. Thus, based on US doctrine, legitimate targets would include those facilities as well as military facilities such as fabs, food storage depots, etc. Air dispensed mines dropped into crop fields would prevent their harvest, and minesweeping vehicles would destroy the crops anyways. Without electricity, food or water, what do they have left?
This state of affairs should force their leadership to surrender in order to end the conflict and get reconstruction.