Your math is disingenuous. 10,000 SIM = 10 x 1,000 SIM. 5 MIC = 2.5 * 2 MIC -- you are scaling by a different amount! Give me the numbers for a 10,000 SIM city with 20 MICs vs 1,000 and 2 MICs.

Also, your perspective is skewed. 1,000 SIM / day income is not a small city! That is 50x my current size!!