AdamCrock
Polish Pirate
For Corporations You want a Free Market, Wall Streeted Beaurocapital HQ and if You have vassals or colonies You want Your corps there (not in Your land) with the exception of Sid Sushi or Cereal Mills which gives You food for bonus specialists in cities. If vassal adopts non free market , force free market on him or use spies to influence his civics. If it is neccessary or You would like corps to spread in Your lands - if You need a resource or more hammers and the maintenance costs run too high - consider pillaging resources/building something else on a resource like a farm or windmill or cancel deals with other civs for resources that corp consumes because if more resources are consumed , maintenance is higher, maintenance is also higher if You spread Your corp to more cities. Civ Jewels and especially Sid Sushi are actually very cool for culture games but if You're up to domination grab/demand vassal resources and spread corporations that gives said resource in their land but make sure they have resources that Your corporation consumes , else it will not work