Some have said they could suspend commercial traffic for the races.
I doubt it. They never have before. Although, I suppose some accommodations are made during Fleet Week (but, that's the Navy, rather than an commercial event).
Even if they don't, doesn't isn't it just factor into the race strategy (as in my example) like local knowledge of wind or tidal differences? Though...obviously, a team couldn't call the the race if they made the wrong call and coudn't out run the tanker!
Sure, that's the way it basically works now with any other race. However, given the egos (and testosterone levels) involved in the AC (not to mention a couple of thousand spectator boats), it might get interesting --- 72 feet of high-tech composites verses 1000+ feet of steel.