I don't really see being rich having anything to do with losing weight. Sure he can pay for a trainer or even a personal chef, but losing weight is still hard. Maybe he's a stressed guy and gets stress relief from eating. Maybe he just doesn't care enough to put the work into fixing it. He's as human as any other overweight person.
Actually losing weight is fairly easy. With calorie restriction you can easily shed a few pounds a week.
With billions, you can do surgeries that will make it far faster than that:
lipsuction. having excess skin removed.
and guess what? He's not going to live 10 more years. if he does that'll be amazing.
and if he has some vision... he's not going to get to see it.
and there's a lot more he won't get to see. tech singularity. amazing AI and full immersion VR.
eating is not worth missing out on all that. it's short sighted for a guy who seems to have a long vision.
No it's inexcusable and the fact that he is human is no excuse.
best we can hope for is he rises from the dead not too long after to make hl3