There is a long history of celebrities becoming politicians. Remember when the Terminator himself, Arnold Schwarzenegger, became the "governator?" How about Ronald Reagan, who left Warner Brothers (the studio with which he had a seven year contract) for the hallowed halls of the White House?
And, of course, let us not forget Donald Trump, President incumbent of the United States of America.
The Rock’s deficiencies are obvious. His opinions on an array of topics from health care to Israel remain unknown; he wouldn’t even endorse a candidate in the most important election of all-time, when the choices were between a boring neoliberal and a moron with a penchant for authoritarianism.