I am sure the Israelis have taken that into account. There is little they can do for the hostages except threaten reprisals. Given that they are already committed to killing all the leaders of Hamas, Hamas leaders have little to lose. Making concessions for promises to spare hostages only encourages hostage taking. It is a cold calculation, but rewarding hostage taking only encourages hostage taking.
Western sympathizers - and those who are masking their hostility to Israel as humanitarian concern - who then fetishize hostages only encourage hostage taking.
Oh I get it. But it won’t keep Hamas from doing it anyway. They do it to their own people and get away with it. But Israel will be lambasted in the media all over the world if it happens.
I suspect the women still held hostage have wished for death for some time.