No I don't think that.Homan, I still have the sense that you're thinking of corporations as something that one should spread to ALL domestic cities, and I don't understand why.
In my first ethiopia game I played, I founded mining corp and sushi corp and I spread it to some cities and a lot of foreign ones.
In that game I had a few cottage tiles, a few workshops and some farms and it was more of a military game.
In the 2nd game I played as dutch. I set up a huge economy where most of the tiles were developed as fully grown cottages with the farms/workshops there just to support the cottages.
I expanded my economy greatly and ran a LOT of foreign trade routes.
In this game most of my cities were

Then came 3 problems:
- as the game went on, the price of the corps suddenly started to go up massively even though the bonus was the same
- I captured one of my neighbours and suddenly I had to pay the maintenance for the corps I ran there and lost one source of the corporation income I had.
- the egyptians, a major source of corporation income went SP/CS
Then things suddenly changed and things went from 50% science to 10-20%.
In any case, I am not saying that corporations should be cheap, nor am I saying they should be expensive: merely that their cost should be known and fixed so that we can plan.
After all any idiot can make a corp and spam it in the neighbours without worrying about the consequences - and if the mechanic is broken they'll never know simply because its the other country paying for it, but to make a good long-term strategic plan we require some sort of stability in terms of price.
Imagine if you built 10 units and paid 10


