Yes, but the progression should be non-linear.
It's rather silly that a country like Finland gets the same amount of tech teams as Yemen, Nepal and Afghanistan.
If you make it 10 or 5 IC/techteam, too many country reach the maximum too early, and there is no real distinction between the majors and the supermajors anymore (I hope the devs can allowing modding of the distribution more).
A suggestion:
1 techteam at 5 IC
2: 10 IC
3: 17 IC
4 25 IC
5: 35
6: 50
7 70
8 100
9 140
10: 190
Another way could be to rebalance the cost, so that you're more limited by the amount of money you have, and less by your IC.