I think it depends on how popular the game is or how popular it will be. After looking it up on google, I found that 111.3 million people watch the Super Bowl. Also, I found that about 10 million people watched the Overwatch League Finals. There is still a large gap in between the two, however esports is definitely growing. If a game that was very popular came out and had esports, it could become as popular as regular sports.