Yes, it can be expensive to be poor, but the rich really do consumer more dollars-of-boot per day, because they can afford it.
> There’s some amount of gradient between use-once and fully bespoke clothing [...]
Bespoke clothing mostly fits you better. It doesn't necessarily last longer. (But you can ask for harder wearing material or longer lasting manufacturing techniques, of course.)
This is why wear-once ultra-fast fashion is attractive in the first place: not only is it cheap (in a very short-sighted sense) but it allows the less-than-affluent to signal affluence (by never wearing the same outfit twice – we call this "being fashionable" but of course being fashionable has historically been about signaling wealth first and foremost).
It’s also possible the situation has changed enough with modern manufacturing that it’s no longer as relevant.