And time and time again they don't: Having your own tiger petting zoo, milk baths, private chef... So now we know that luxuries may or may not turn out to be considered basic needs.
> private chef
I can purchase a pre-prepared meal and heat it up in my microwave by pressing two buttons. That's pretty close!
Some past luxuries were just fads and go out of fashion, others address a lasting need but fail to scale up and remain extravagant luxuries only available to the ultra rich, others still also address a lasting need and are transformed into something that works on a societal level.