Need to ask something else as well: is there really any point to building the various capitals other than fluff? For example, the Manufacturing Capital gives only a 25% bonus to production, while a quantum power plant gives 100% for half the price. The Economic Capital is just two stock markets with an inflated price tag. It doesn't seem like they are worth the investment, TBH.
I haven't played DA, so to respond to the Manufacturing Capital part...does it stack with a power plant, and if so, how? Because if it does something like adding the 25%
after the power plant's doubling, that's a lot of shields/hammers...
The Economic Capital comes along a lot sooner than stock markets. Even if you somehow get it after stock markets, two stock markets use up more tiles than one econ capital and, IIRC, the Econ Capital costs less than the two stock markets put together. If I've specialized a planet to be a cash cow, I want to squeeze every last credit I can out of it.
For the Technolgical Capital...I'm not aware of any other research-
multiplier buildings, so that leaves its use pretty obvious.
I can't comment on the Political Capital since I've always been too busy researching ways to hurt people to bother going past Republic =P