How isnt Amazon liable for this / sued? If Walmart did the same there would be various lawsuits
Maybe some kind of class action but that requires an attorney spending money to advertise and collect information from the class of people harmed. Then litigate, settle and what money do you get? [2]
[1] How much did this particular seller lose? No way it's enough to pay any legal fees. Even if it is even if Amazon has to pay the legal fees what do you get in the end? Time trouble etc.
[2] I just got a check for some Verizon class action in the amount of roughly $2.00 this was after so much time I had forgotten about it.