Let's see (only what I have answers to):
Cheap rents and affordable housing.
Allow more vertical building.
Protective nets for periods of illness/unemployment/etc.
I and my employers pay a fund that covers it.
School districts equally equipped, with good teachers.
From the taxes, it's not so expensive.
Free (or very affordable, no-loan-based) college education if their kid passes a hard tamper-proof exam.
From the taxes, it's not so expensive if you only pay the smartest ones.
Taxes on outsourcing work outside the country.
Well, that's income, but I disagree. Just forbid making any business with tyrants. I know, I know...
The rest maybe, but this is a core issue. And I don't know how you can read that quote and go "that's increased spending".
I don't share all the points of the originator of the thread (was it coldtea?), you might find interesting which ones I didn't mention, but some of them are a good idea even from the point of view of more affluent people.