First of all, unless you're referring to other rules, I don't think the current rules are multiple discrete quasi-governments on all worlds.
Hans
Hans, wrong. Each faction is rolled as a government, no matter the description. Go LOOK at it.
Also, T20, p 370, description of UWP locations: "Government: Government Code, indicating the nature of the dominant world government"
(Note Dominant.)
The Amber Zone in TTB shows that Heya is not a unified world government, despite code 4, as there is an active rebellion (one of several descriptions for Balkanized in later editions), and notes that the law level is effectively only in the capital.
Tarsus notes that Sternmetal Horizons has a corporate enclave on world. That enclave is not explicitly extraterritorial, but since it's policed by corporate mercs... It's also a tiny fraction of the population.
TTA has several worlds where the "Government" has limited influence - The Patinir belt is actually not even governed from the belt, but from the trojans of the GG, and they have little authority outside that enclave. Also, Junidy has restricted regions of Dandies...
"Government claims of complete equality between the two species are now largely perceived to be a sham, as there is no unified, integrated structure
to the co-dominium. Humans run human affairs, Dandies run Dandy affairs, but all are still answerable to the (human) governor-general and his staff of (mostly human) advisors." (TTA p84)
TTA p 115 shows gov't code 0 to also include private worldwide holdings by a family... Lewis was/is "owned by the Tukera Family" and there are independent settlers; they got the Marquis of Aramis to interdict the world in an attempt to isolate the settlers. Really, it's two distinct sets of familial governments, with two different tech levels, even...
Even the chapter on Aramis really shows that the Government of Aramis really is only the government of Leedor... but then, Leedor is almost the entire population of the planet.
The whole concept of government codes was at odds from the start.
An important quote is from Sup 3, p 38:
"In effect, government types express the level of government which the average traveller encounters. The upper level mechanizations of government are less important to an individual than the actual conditions which will be encountered at the personal level."
Also note: post collapse balkanized worlds are noted with a trade code, not a government code, and are always showing the dominant world government.... (p.191)
There is no doubt that the gov't codes represent the dominant government of the world... but there is evidence that it's not inherent that it's the only government on world, and that its reach may in fact be quite limited. And in TNE, it explicitly doesn't preclude lesser governments, especially since Balkanized has dictionary denotations of hostility as a normal component.