Oh, I see. That's funny, because Spain and Portugal never had trading companies. Well, Portugal made a
short-lived attempt, but only after the English and Dutch already had theirs. Only nations that were already proto-capitalist at the time and in which merchants rather than the nobility were dominant, like the Netherlands and England, successfully built these joint-stock companies. Related to this is the issue which SultanRedSnake mentioned in his Portuguese guide, that Portugal should start with regulated trade, not merchant trade.
In relation to the Dutch UHV: the Netherlands spawn, accurately, in 1580. The VOC, the Dutch East India Company was founded in 1610. In DoC it's pretty much impossible to get Economics by that date, let alone build the company, perhaps only if you burn a GM on Economics and a GE on the wonder (which in itself is already impossible), but then you won't be able to settle 3 GMs in Amsterdam in time. Given that the Dutch UP is related to the TC, it would be nice if the civ could actually enjoy it.