Free (as in beer) and centralized or giving the impression of working as a centralized system. That seems to mean it must be ad supported, or run on donations.

What doesn’t work is trying to invent some open/stabdardized/distributed system. I’m happy to be proven wrong but we haven’t seen that work because they invariably have some drawback that the centralized systems don’t, while too few care about their benefits.

I don’t think anyone cares strongly about the origin if it’s American or European.