I'll go out on a limb and say that state property is probably a better route for domination wins in all cases*
Corporations aren't well designed/balanced/tested/thought out, and they aren't particularly good. They're a trap, like most infrastructure is. And they come waaaaaay too late in the game. You can run a profit with them eventually, but that's true of virtually anything. It's only a good idea if it is efficient, in other words if you can overcome your initial costs and snowball quicker than the alternatives (like say, units)
The Costs:
- One great engineer (a valuable, and maybe the hardest to get GP).
- Free market instead of state property. This is the real kicker, because for corporations to be powerful you need a lot of resources, i.e. a big map. And if you're conquering on a big map state property is the obvious right choice.
- All the hammers you are building the executives with.
- All the hammers you are using on otherwise extra courthouses so your economy doesn't implode.
- All the hammers you are wasting on getting enough banks & then on Wall Street, again just so your economy doesn't tank.
- The initial gold cost in spreading your corporation.
- Tech path restrictions, i.e. being forced to beeline railroad.
- Or worse, risk losing the race to found mining inc.
And yes i assumed you were going for mining inc in the costs, b.c it's the best corporation
Mainly though corporations just come too darn late. If you're going mining inc, you're poised to reep the rewards and conquer the entire world.... with modern armor in the 20th century.... If you went SP you could have pulverized the world in a nuclear holocaust centuries earlier
