Unlikely comparisons, hm?
ORE: Jacob Waltz. They know where the gold mine is. Only they. And they're not gonna tell anyone.
Caldari State: The Brethren of the Coast. A loose but codified coalition of separate but similar profit-based enterprises (each crew corresponding to a corp).
CONCORD: The (old) Catholic Church. An overnational organization with its own set of laws and a myriad of social and political functions, funded and supported by several different states, many of whom have tense political relationships with each other. On many occasions, friction also occurs between the organization and the governments of the "member states". States who exist outside of the organization are likely to be considered hostile by default by the organization and those inside it.
The Minmatar Republic: Poland. A nation with a long tradition of getting invaded, occupied, subjugated and wiped off the map by big and aggressive neighbors who feel entitled to do so, yet they doggedly continue to reappear as a sovereign state (Poland is actually more impressive than the Minmatar Republic, since it's been able to do so repeatedly - though never twice in quite the same location).
Sansha's Nation: The Mormons. A utopist dictatorship consisting of dissidents, setting up shop in the middle of nowhere, while facing extreme hostility on moral grounds from outsiders.
The Khanid Kingdom: England under Henry VIII. When the local ruler's ambitions are thwarted by the central politico-religious institution of the larger region, he chooses to have his entire country secede from said institution rather than comply with tradition and submit to its authority.
The Gallente Federation: The British East India Company. "You Intaki and Jin Mei look so handsome in Gallentean uniform, don't you agree? And no, of course the grease on those ammunition cartridges aren't in violation of your ancient taboos...whatever they are."
The Amarr Empire: Microsoft. It is everywhere, and it wants to decide what your virtual world should look like. Its tentacles reach to every corner of known space, threatening pockets of freedom and resistance everywhere, demanding that you conform to their standards, their visions, and God help you if you're tried and found incompatible. And they will not stop, ever. You know it is true.