I can draw that conclusion simply by looking around me seeing how better off are home owners financially.

Where I live, paying a mortgage is 30% cheaper than paying rent.

Also paying a mortgage is like putting money inside your bank account while having somewhere to live, whereas by paying rent you simply put money in your landlord's pockets further enriching them or allowing then to not work.

Additionaly there are guardrails for when you can't pay your mortgage while in most countries there are none for not paying your rent.

Edit: I guess the people you mention are so well off that they don't experience any financial insecurity, have passive income unrelated to actual work and thus can threat home ownership as a services. Aren't they?