Nope. Once you make me dictator, I force a bunch of experts to work out a system of government that will make sure there will be no more dictators after me, and that said government will be obligated to work for the betterment of the populace as a whole without massive disparity. At the same time, I'd hire another bunch of experts to figure out what the first bunch got wrong.

While those two groups are working, I shall decree that in one month we will start executing billionaires starting with the richest and working our way down -- but anyone who donates all their 'excess' money to the new government or charities and research that I personally approve of before the deadline gets to live. I'm counting all off-shore money, and any attempt to flee the country shall be met with lethal force.