Is the executive/PM in developing countries constrained by "talent pool" for top leadership positions?
Not really. The market for top talent is global, and as such there is little excuse for incompetence at the top.
One reason for failure to attract competence is environment - it's not about the money: the opportunity to work at the "country level" is super attractive
But executive needs to create the right environment, e.g. delegate properly, that is her job.
Perhaps the most important task of a chief executive, e.g. PM, is that, (a) she appoints the very best people to lead key areas, and (b) delegates proper authority to them
Poor countries need to "build stuff" from the ground up - they are poor precisely because they lack the systems, infrastructure and institutions that are necessary for development
Building this stuff is hard - it requires skills that only a very few typically have
A rich country can afford to appoint incompetent people once in a while because the quality of its systems hedges against incompetence at the top - but a poor country does not have this luxury.
In poor countries, incompetent appointments only perpetuate the cycle of misery
Questions in economics are social in nature which can understandably trigger an ideological/emotional response
But one must resist that initial temptation and start with a formal framework to think objectively about the question at hand
This is what theorists try to do
For a question on the minimum wage, we must start with a theory of how labor market works
A theory does not tell us how labor markets *actually* work, but it guides us by spelling out conditions under which a minimum wage is desirable versus not