or more precisely super-computers but the "hosting" in this text has nothing to do with IT.
It's the same kind of "hosting" as when you talk of a country that is "hosting" some international organisation.
as in this text:
https://brettonwoodslaw.com/disadvantageous-relationship-int...just replace "international organisation" by "supercomputer" ...
BTW there is a pretty strong clue that these "hosts" are not computers of any kind - no computer would qualify to be called "an entity" as no computer so far has been given a legal personality.