I’m not a lawyer, but a lot of these crusades smell like tortious interference[1]. A lot of people just don’t know their rights, but if a third party, which I imagine includes an employee acting in a personal capacity, interferes and causes your AWS contract to be dropped you have a solid cause of action against them. And unlike a lot of activists, Amazon employees may well be worth suing.

And this is a good thing, because reliable contracting is foundational to a developed economy. If you can’t rely on your contracts being honored over arbitrary non stipulated issues then your operation becomes massively less efficient.

[1] https://en.m.wikipedia.org/wiki/Tortious_interference