something that people need to consider is just like the very top poker players work insane hours doing study - ie there are infamous stories of guys like linus living with other poker players who throw a party on the weekend and linus doesn't once step out of his room during the party because he has some sims to study
take tom brady, every waking minute of that man's life was structured and planned
tons of players would always complain that it was impossible to just go "hang out and chill" with tom because he had scheduled out his life so much that even during the offseason he never had any free time to hang with the boys
this is 100% why his wife divorced him, she finally thought that part of his life was over and then he turns around and tells her, you know what, I'm going to keep at it a few more years
would not surprise me at all if ohtani had that sort of linus/brady autistic dedication to his craft to the point where he had absolutely zero time to even want to consider handling financial stuff - he wanted to stay in the zone and live free of distractions
this is probably going to catch flak, but he also did not marry a smoke show but instead another professional athlete who is rather ordinary looking
you see this commonly in asia where people tend to marry more on practical reasons and athletes tend to marry other professional athletes hoping they'll breed superstar children (Yao Ming is the product of two pro basketball players marrying, Yao himself married another center who stands 6'3')
yes it could be true love yadda yadda yadda but he may have been filtering for just professional athletes from the start because they'd both understand the drive better as well help produce superbabies