The leader of DraftKings has a lot of optimism when it comes to California sports bets. Of course, his opinions may be somewhat skewed by the fact that his company has a rather large investment in that market. And of course, DraftKings could profit plenty if and/or when that market eventually opens up. CEO Jason Robins optimistically believes that California sports bets could be live as soon as next year. And why not? After all, DraftKings is pushing one of the ballot referendum which voters will consider this November. DraftKings is part of a larger coalition which was able to…