I might be way off, but I didn't think the YouTube revenue is all that lucrative. I pulled up some site that estimates the revenue based on view counts and it has his channel pulling in about 50k per month. 600k per year is nothing to sneeze at, but it's peanuts compared to the 120 million / 4 years deal he walked away from with Fan Duel or the 89 million / 5 years deal he signed with ESPN. I assume there's quite a bit under the surface, I'm just going off the headlines of the deal, I never bothered/cared to find out if any of the details got published publicly.