Based on my experience in many privacy roles covering US, EU, UK and other countries, the sale of a company will likely be covered in Google's privacy notice and is not considered a sale of personal data considering customer's personal data will immediately be covered by the purchasing company's privacy notice.

Funny, because if I decided to go into business with Google by renting a service from them, that honestly shouldn't mean that I automatically decided to go into business with some other corporation at Google's whim.

But hey, capitalism really cares about personal autonomy. It's not like it just exploits our labor and treats us like commodities or anything. /s