I mean, I'm a fan of regulatory action, in the same vein as what was proposed with net neutrality originally, and dissolution of the monopoly. The services Google provides are vital to the functioning of the internet, and as such, must be treated as a governed utility the same way internet provision should be, with tight definitions of services and regulations to control what can be done and when. In that regard, companies like Google and Amazon(in regard to AWS) would be classified as utility providers similar to ISPs with the same degree of accountability in regard to service provision, availability, transparency of policy and actions, liability, etc.

In addition, break up the monopoly accordingly. Entertainment services, telephony/internet/communication services, electronics development, however it would be appropriate. Problem is how many of those services overlap and likely where they'd argue that the company can't be broken up.

Like you said, that's like seizing their business from them and it also doesn't account for global factors. However, each nation is ultimately responsible for how companies operate within their borders, internet service providers should be no different.