I don't work at Amazon, but I have a few insights here through insider backchannels. It basically all comes down to numbers and the amount of money spent on opposing the union versus how much money they will save on suppressing wages if the union fails. In other words, it's pretty good ROI to invest in union busting at all costs because the cost of a few lawyers and consultants is much lower than paying living wages.

It's unlikely that Amazon employees will be reprimanded or whatever, but they probably will use a different law firm next time around.