I will say that money can buy morals. I hate what Amazon stands for but worked for them until recently. They pay well enough that I have been able to live the life I want in the city I like without worry. Did I contribute to a company I'm morally opposed to? Sure, but the impact on my day to day life made was bigger than the day to day moral issues.

When working at these places, it's never one big thing. Each project that erodes something is a fun problem to solve and you never see the total impact. Your part is so small it's not doing any harm! And then put those all together and you've got the things this post talks about.