They already perform censorship of materials. Even if you don't take child porn/"Pirate Bay" type stuff into account, Google removes/blocks/filters out an enormous amount of content in the forms of images, videos, audio, and printed words.

Unfortunately for me, I am tied into their ecosystem in such a way that I can't remove myself, because too many work-required and other accounts use Google-provided solutions, and it is required by clients or whatnot. Even my tv and blu-ray player are powered by Android.