I've only started listening to Alex Hormozi (who did quite annoyingly over-saturate internet with his presence over last couple of years) recently and I think he definitely has quite smart and useful ideas about marketing, sales and productivity, regardless of whether he does exaggerate his net worth (I personally try to exclude all thoughts of somebody's wealth from equation, because there are so many wealthy idiots and poor geniuses). 

As for separate topic of multi-millionaires not retiring I personally completely understand it as a person who had kind of a mini-retirement and did no work for money for 6 years while being quite young (early thirties). 

In myself and other people I knew who were living similar lives I've seen scary cognitive decline which in my opinion can be much more pronounced with age.  

So in my opinion commerce for a lot of people is a very important tool for mental and even physical (because they are connected) fitness.