I don't have my book handy, and haven't read it in a while, but who sets up the currrency exchange? since these are corporatioms, is there a Dow Jones somewhere?
yes there is, the brotherhood is the glue.
cybertronic manipulated it to get into gear. one reason why broth hates Cyb..
custumors are most likely mostly their own ppl..
the situations is more like a feudalism with industries producing for their own state (family or nobility held: bauhaus, imp, mish/directors:cap/collective-ai-?: cybertronic). goods are efficiently bought from the "leading class" and the masses (their consume level/savings-level) therefore in the hands of the bosses..
this is a princip often used to expoit ppl, eg. farmers in brasil, who can not access other markes
trading happens between the states/corps, of course. and i bet they put heavy import taxes on the superior bauhaus kitchen tools! esp. in capitol, i guess