"and whose brand has taken a strong market stance on privacy and security."
I think people expect Microsoft and Google to cave given how cavalier they've been with user data, particularly of late, so seeing them back this is a bit two-faced.
However for Apple, this could have a significant impact on how their brand is perceived in the market depending on how high of a priority the "privacy/security" aspect is with their customer-base. They will fight this as hard as they can because those dollars aren't just wasted legal costs, they are building trust in the brand since they are putting their money where their mouth is.