early in Google's existence, they emphasized how their business depends upon a lively open internet. in those early days they mostly seem to foster that.
but now they (and their peer firms) mostly try to keep users on their own properties, to become the intermediary through which any external data is accessed.
an unsafe internet is more supportive of this business model. if it's a dangerous internet, better stick with Google SafeSearch.
so why do you think Google might propose a .zip domain?