People do starve today, in every developed country. It's rare to die of starvation, but poverty still means skipping meals.

Housing supply is scarce because of regulatory capture: homeowners and real estate companies have the strongest incentives and massive resources to keep it that way.

Medical attention is scarce because of regulatory capture by those doing those jobs: the numerus clausus is still a thing, and not in any way defensible.

The parent is right: scarcity today, especially in developed countries, is completely artificial, because it serves those who benefit from it.