If the USAF fails to reliably penetrate the Chinese region with air power, I do not think much "counter-value" strike on infrastructure would happen as it is both an escalation and without value tactically when PLAAF and PLAN remains active and both makes demand on stand-off munition stocks. One could see months of indecisive air campaign if the opening blow fails to win the war as rate of combat gets limited by rate of long range munition production. USAF may not want commit to high attrition "decisive" air campaign as it can wait until the Chinese makes a move that makes such a commitment relatively decisive, like the Chinese massing land forces onto vulnerable ships or Taiwan being close to giving up.
The bulk of the USN would probably stay well out of A2AD range until PLAN commits amphib or some other attack, as attriting against land forces is without merit, though it could be committed to defeat PLAN/PLA landing forces.
The Chinese can either launch a rapid land invasion of Taiwan at the start of the war, in one of the most difficult operation in the history of warfare, or just blockade it, which takes comparative trivial effort, and hope to force a surrender or at least greatly degrade defenses. As operational level surprise is difficult in the modern era, a siege is likely. China can still maintain a blockade if their landing attempt fails, so such a event won't necessarily end the war.
This war scenario can last a while, until either Taiwan or China takes enough damage to give up. CONUS is untouched.