Happy is a peak thing, very quickly fading
Contentment is a mood that lasts
Money can make someone happy a little while
The things that money can get a person can make someone happy, a little while too
Money can make someone content if one can manage it well
But theres no guarantee money can/will make someone happy
I know a guy that is very wealthy (to me anyways - he probably made $1 million a year and retired early). He doesn’t spend it on anything lavish. Has one nice home and decent cars (he drives a 5-year old Lexus). He figured that one could have too much money and it would just add to one’s worries having to take care of the various homes, all the toys, etc.
Of course these ultra-rich in the article just pay somebody else to worry about those things.