Being in that class of people, I’d contend Felix Dennis’ view of what wealth is is poor.
It may take a decade or two, but individuals in these professions who work at top tier roles will be wealthy by any reasonable measure (7-figure investment portfolios and no bad debt is “wealthy” to anyone without a very uninformed understanding of what the word means).
I'll rephrase the above comments: having seven figures of assets or income confers material wealth but not political control. Political capital is far more expensive. At a minimum, you need so much money that hiring a team of lobbyists to confuse your local congresscritter is a petty cash drawer expense. Ideally you will also want to forefeit your right to privacy and become some kind of a public figure.
A case study here would be Louis Rossman: rich enough to run a MacBook repair business but not rich enough to bribe/tip Congress into passing a right-to-repair law.
It may take a decade or two, but individuals in these professions who work at top tier roles will be wealthy by any reasonable measure (7-figure investment portfolios and no bad debt is “wealthy” to anyone without a very uninformed understanding of what the word means).