Well, if you're willing to look for it, there does exist research within political science that shows that "the elites" are systematically favoured in representational democracies, as far as policy implementation goes. In short, these analysis show that policies that has the favour of the elites gets voted in far more often than policies that only has the favour of the regular population.
Two great outliers here are of course the vote for Brexit, and the election of Trump. The elite hated both of those. An interesting paper would thus be to compare the contentedness of these "factions" with their political system between countries that have representative democracy, vs. countries that have a more direct style of democracy such as Switzerland.
Speaking purely from logic, neither the political nor the monetary elite would rationally want regular people to get a possible advantage over them. Moreover, they want people that are dependent on them, because that makes them far easier to control. You do that by making sure they only ever get enough money for their daily bread, without getting so much as to cut into what keeps the elites rich, which is a combination of real estate, banking and industry ownership.
This means both some right leaning, but also left leaning parties, might want to ensure that regular people are never given more than exactly enough for mere survival, but not a penny more. This also goes for education, btw. You don't want to over-educate these guys, lest they become a competitor to the job you're looking for. If you give them any less, you'll have riots on your hand. If you give them any more, you lose control over them.