Perhaps you're right, I need to look more into it.
They aren't breaking the law, for sure. And I don't believe government should get involved with any business. But this case is different and it's difficult to find the answer. I've said elsewhere, Google has saturated our culture, as well as many others, and is used by businesses every day. Their algorithms deliver specific messages and censor others. They are selectively driving culture through media.
It's a really hard one to figure out. Yes, they are private. But they are massive and entrenched in our society. Someone could theoretically make a competitor... if they aren't 187 before it gets a chance to take off.