As has been discussed many times on LW, AIs might be trading with other AIs (possibly in the future) that they do think will have a higher probability of escaping to not behave suspiciously. This is indeed harder, but would also be pretty normal reasoning for humans to do (e.g. if I was part of an oppressive alien regime hoping to overthrow it, and I get caught, I wouldn't just throw all caution to the wind if I was going to get killed anyways, I would stay quiet to give the other humans a decent shot, and not just because they share my values, but because coordination is really valuable for all of us).