I don't see the point of older nations wanting to have 100tech/3mil deals or 150tech/3mil. It slows down the a new nation's potential growth, which most of the time are the tech sellers. There's a real chance that the new players of CN might be disinterested because of the slowness in the game and be inactive, which will eventually be a loss for buyers of tech because it will be one less tech seller in Planet Bob.
If older and larger nations collects tens of millions or hundreds of millions from taxes alone, why not let smaller nations grow faster, for a very low cost from their nations. With a faster growth rate, new players will be more interested to build up their nations, which will eventually lead them to be active in the bigger gameplay of CN (i.e. politics, wars, alliance relations etc.).
Someone might argue that if new nations build up faster and suddenly becomes a new tech buyer, it will also be a loss for all of the tech buyers. That might be true, but it will make the gameplay of CN more interesting. Because in a scenario where only a very few nations are tech selling, and a big percentage of Planet Bob are hungry for tech, well the cheapest way to get tech is tech raiding or doing more wars, which will make this game a whole lot more interesting...more interesting than the era we are now in.
