If the news about LK-99 has any element of truth to it, then superconductor-based technologies and maglev transport will become much more affordable in the future.
But today supra conductor aren't something just for the rich. It's used for some specific application like MRI which benefit to the people needing them rather than the rich.
Why on earth would you want an MRI machine at home? They are huge, the noise they make is untollerable, you cant have any metal objects nearby lest they turn into projectiles and you need to be an MD to use it.
If the room temperature superconductor is finally a reality, it'll become possible to own an MRI device at your home because they'll be smaller and cheaper, just like how some tech enthusiast have x-ray scanner at their home right now. Not saying it's practical, but at least it'll become possible for an individual to purchase it.