-- Recently there was that dragon from Clutch and his land deals in the SSC that had to go through all sorts of rigamarole to be legal.
The BRA objet is to give AA and AAA corporations specific rights. It does not apply to dragon and whatever small business they happen to use as a front.
Proteus builds an undersea facility near Vancouver, in the Strait of Georgia (which it not large enough to allow for it to be in international waters). Wuxing is seriously considering Vancouver as an alternative to Seattle for building a new tower. So the Salish-Shidhe doesn't not seem to be very hostile to large corporations.
If anything, a stronger case to be done to claim the Salish-Shidhe may not have signed the BRA, but only negotiate on a case by case basis, would be in
Seattle Sourcebook, where it says Federated Boeing had "separate negotiations with the Salish-Shidhe Council" to secure "the company's major plants and facilities, as well as the continued supply of vital aluminum and special airspace privileges." The use of the expression "separate negotiations" clearly mean no other corporation was involved in these. Obviously, it wasn't intended to mean anything regarding the BRA, which were imagined ten years later.
But again, signing the BRA never implied Seattle-like free reign extraterritoriality. CAS, Québec, Switzerland have signed them and enforce stringent rules. In the two latter, the government could establish only a handful of zones for which megacorporations must apply to establish extraterritorial facilities.
It actually seems the BRA enforce specific privileges inside area owned, leased or rent by corporations, but still allow states to restrict what the corporations can buy, lease or rent, as done in the CAS. The Salish-Shidhe could very well fall into that category, being very cautious about who buy lands precisely because once the deal is done and ownership is transfered, BRA-inspired law would kick in.
Based on the list of countries that did not sign the BRA, it seems what keep them out rather is their regulation regarding company ownership, restricting foreign shareholders to remain under 50%.
-- I just have a really hard time believing that Howling Coyote and the early STC would give the corps the time of day, much less agree to the anti-sovereignty BRA right after they fought a war caused in no small part BY the extraterritorial corporations.
Daniel Coleman resigned from the Sovereign Tribal Council in 2037, after the Tsimshian left, as he found himself "unable to maintain the solidarity of the organization he had brought into existence". By the time the Corporate Court put the BRA on the table in 2042, the Ghost Dance War began 28 years ago, the Treaty of Denver was signed 24 years ago. Except for its youngest members, the original generation of Coleman's companions would be on the way out as well, simply because of their age. Besides, the corporations can wait (as exemplified by Tir Tairngire, which they hope would sign the BRA soon by 2072).
And remember, when the Ute Nation folded, Aztechnology lost their only major hold in the NAN. The PCC was right quick about kicking them out, to the point of shutting down the Stuffer Shacks.
Aztechnology also has a major presence in the Algonkin-Manitou, where the government relied on ACS troops to quell down the elven Manitou uprising.