Getting in the kind of shape he's in - which btw for a 50 something year old dude is insane, like anyone saying 'ah its alight' tf you talking about hes jacked af - requires hard work whether you are rich or poor.
There is an absolutely enormous difference when you are rich though - you can have your meals calorie and macro controlled to suit your goals as determined by a professional nutrionist, you can have a personal gym and a dedicated trainer available wherever you are with no need to stress about driving or finding a place etc, you've got a PA to block out time in your diary for nothing but working out, you can have a dedicated doctor monitor your enormous intake of PEDs with expensive bloodwork and make sure they are constantly dialled in and not causing you problems, and indeed you can have access to the purest and highest quality PEDs with no worries about whether the shit you are putting in is actually what it says or not.
Yeh Dana is probably a somewhat time poor guy but he isn't running the UFC day to day - he finds time to argue with randos on social media, film fuck it friday videos, gamble with the Nelk Boyz and take vacations. Meanwhile some poor mfer has to work 8-6 and collect the kids from practice and do chores and do their accounting and walk the dog and cook and all this other shit you don't have to do when you are super rich. Stop bootlicking people for getting mega wealthy and don't assume they're the hardest working mfers in the world bc they did. Dana must grind to get that physique but I guarentee theres loads of people putting in more effort and getting less results bc of the diffference in their personal circumstances.