I’m not sure the royals caused this. I guess the main issue is that some democracies become too entrenched, and groups of elites take over the role of nobility, time limits doesn’t help, since to be in a position to become someone, you have to join those that already rule. Capitalism also doesn’t help and even accelerates this process. Abolishing FPTP and instituting ranked choice would be the first step I think on improving democracies, by breaking up these elite groups.