The commissioner may revoke a license issued under this article upon a finding that:

1. (1) The licensee is not a suitable person;
2. (2) The place occupied by the licensee is not a suitable place;
3. (3) The licensee has violated a provision of this chapter or a regulation made by the commissioner under the authority of this chapter; or
4. (4) The licensee has failed to comply with the spirit and intent of this chapter by encouraging intemperance, the unlawful consumption of alcoholic liquors, or otherwise.