> For poor people, who are spending most of their money on necessities, it won't mean much (unless their employers don't match incomes with inflation, which IS a problem). But for rich people, it offers a powerful incentive to spend today, or to invest their money with hopes that the returns will offset the inflation.
The way I see this, there's a fallacy there.
The claim, that inflation won't matter much for poor people is wrong. Even if their employers compensate for inflation with accordingly increased salary (which they don't always do) then there's still the fact that poor people are treading their treadmill, unable to advance one bit. In the best case they stay right where they are (relative to others).
Rich people on the other hand have the "burden" of sitting on assets that do not suffer inflation. And any excess money they earn which they don't need to spend on everyday items, they can put into investments that again do not lose value like cash does (under inflationary circumstances).
Quite simple: rich people have opportunities to invest and earn profits, letting them improve their position relative to poor people even further. Poor people don't have these opportunities and they even have to constantly fight for compensation of inflation while having shorter levers to push everywhere in society.
If rich people weren't urged to invest money they have sitting around (by threat of inflation), they'd maybe just hoard bigger proportions of it and sometimes spend some, instead of using it to acquire ever increasing proportions of assets from poorer people who have to sell.
I'd say inflation almost directly causes wealth concentration.
In this way, inflation does indeed mean much for poor people. No, it's not totally obvious, kind of counterintuitive even. But it's true.
The current development is like a continuously happending race along a path of steadily increasing availability of pleasant goods and opportunities ... where the rich are moving significantly faster along the path than the poor. Yes, the poor do advance, but the lead of the rich continually grows larger.
Since wealth is psychologically very much a relative thing, this is bad, even if the absolute wealth of the poor is indeed increasing over time.