This comparison is just like comparing apple to orange to me. When a company blocks you, you could just voice your opinion on another platform. It's an open internet afterall. But if it's the government, the center of all power, that blocks you, you just have no other way. That is the difference of having and not having freedom of speech. If the people are really concerned about Google's and Apple's business with Saudi Government, they have the freedom to go for the third option. It may seem difficult but it's totally possible and viable. But under an authoritarian regime like China, even the freedom choice is an illusion.