> A practical example is health care. US Gov gives free healthcare to service members. This is in the military budget. A different gov which already gives free health care to everyone, would have this in a different budget even if its effectively still supporting the military for each service member.

Yeah, between military (active, dependents, retired, et c), elected officials who get government-paid healthcare (in any level of government), government workers (all levels, city, county, state, federal), and school workers (primary, secondary, public colleges and universities), and Medicare (old people), and Medicaid plus CHIP (poor people), and probably some others I’m forgetting, the US engages in as much government per-capita healthcare spending as some peer states do on their national healthcare schemes… but without covering everyone. However, the government does already cover a huge proportion of the population, including some of the most expensive (old people), at least partially. And that’s not counting government spending on contractors that take some of that money and pay for their workers’ healthcare with it.

It’s just split up across thousands of different budgets, instead of one.