The best BI solution is subjective since every company’s situation differs slightly. For example, a company that uses Salesforce may lean towards Tableau since Salesforce purchased Tableau four years ago. Any company heavily invested in using Google products may lean towards Looker. Just because a company uses Google or Salesforce products should not be the basis for a decision.
Other factors to consider are the existing infrastructure, analytical data needs, and storage preferences, whether cloud or local, are only a subset of reasons why a company may choose one BI product over the other.