Answer:
One of the main economic issues in developing countries is rampant corruption or extremely inefficient government institutions. This means that less government intervention is always better in developing countries.
On the other hand, in developed countries, the checks and balances system exists within government institutions and even though corruption may exist, it is not as widely spread. The most severe economic problem in developed countries is inequality and huge economic actors. This is why activist policies may be necessary in developed countries, at least in certain economic sectors.