Elected officials in Google's home country have made the decision. They decided to make marijuana illegal at the national level, they decided to make facilitati

Elected officials in Google's home country have made the decision. They decided to make marijuana illegal at the national level, they decided to make facilitating financial transactions supporting sales of illegal drugs also illegal and they have repeatedly choosen not to change those laws. More recently elected officials have decided to appoint law enforcement officials that are less willing to overlook violation of federal drug laws in states that have legalized marijuana at a state level. It is this later move which has most likely made Google decide to make the changes in their content policy. So in effect Google is doing exactly as you suggested, allowing elected officials to make this decision.