Because if you don't use Apple products, Apple doesn't care. They don't track you and they don't store your information.
Google however is a different case. Even if I don't intend to use Google's products, I don't search from their site, and I am not a customer of any of their products, they STILL track me through javascript files linked to or embedded by other websites I do visit.
I can choose not to be tracked by Apple, but unless I take extreme measures, like blocking google domains in my HOSTS file, which I do, I can still be tracked by them -- against my explicit consent, which is exactly what Big Brother did.