> the issue is in how "socialists" tend to run systems: everything is great until they run out of other people's money.

That would seem true of any organization other than a self-funded one. All corporations, banks, governments, etc. use investment by others (including taxpayers) and cease operations if that investment stops.

The bland generalization about 'socialists' isn't meaningful without some evidence and a specific falsifiable claim. We can make statements like that about anything.