Monarchs generally take a long view of history and make long term management and investment decisions in their kingdoms, because they know their heirs will inherit what they leave behind.
In democracies, the populace and politicians are short-term focused and thus shortsighted. Like all the unwashed butt voting masses who live paycheck to paycheck with no savings butt always have a new vehicle and anything else they can finance.
No, I'm now leaning towards monarchies as superior to democracy when the population is just plain stoopid. Which is almost always the case in practice.
Now, we have doomed our children and grandchildren by incurring massive debt and living well beyond our means by way of selling the future for a few beers and hamburgers today.
A monarch has a stake in building a sustainable kingdom. Shure, some have fallen into the debt trap, butt democracies seem to invariably do so - almost every time. The Shah built Iran into the most modern, most Westernized civilization in the Middle East - I would argue even more modern than Israel at the time. And now, all that is lost. Iran is one of the more backward-looking, disheveled states in the Middle East, and that's quite a feat considering the competition (e.g., Syria, Yemen).
As an aside, two of my Iranian mates, the Eslampour brothers Bezhad (Boz) and Babak, were from a family that owned a construction and heavy equipment business in Tehran and the surrounding area. During the aftermath of the Iranian Revolution, there was a photo in one of the newsweekly magazines of hangings being done in Tehran. And oddly enough, the portable crane that was used for the hangings in the photo was an Eslampour crane - and so marked in Farsi. As you can imagine, this was a source of embarrassment for the Eslampour brothers - butt it was nott that their family was behind Ayatollah Khoumeni - the radical Islamists forced, by means to threats and intimidation, the family business to loan out this heavy equipment and an operator for this gruesome yobb. Butt, young men being young men, that photo got posted on the doors and common areas - repeatedly - to kind of taunt them in a 'good-hearted' form of teasing.
During that period in 1979, everyone was glued to the TV for the evening news - with the Iranian guys breaking into three groups - one group supported Shah, one group did not like Shah and were nott radical Islamists but supported the revolution hoping that Bakhtiar or other 'Mensheviks' would get control and thru democratic elections the Islamists would be sidelined so they were just a convenient tool to overthrow Shah, and then there was Kouroush, the communist - a supporter of the Tudeh Party and advocating violent civil war to install a communist government. Kouhroush sat by himself. He was nott liked by his fellow Iranians (nor by me). Butt we were all glued to that nightly network news in the common room/lounge when the news from Iran was on. It was pretty tense for awhile, butt mostly everyone got along - except Kouroush.