It used to be a lot worse in the US, with much of the government changing every few years. The introduction of the civil service brought a measure of stability, where political appointees ultimately are responsible for carrying out the vision of the president but the actual work is carried out by career employees that are often with agencies for decades. The establishment of similar institutions is a goal in less established governments to dial down the stakes on elections. It’s not uncommon to have governments where employment is tied to party, tribe, or ethnicity. Not only is merit a secondary concern so the government is run by ill suited employees, but each election is a high stakes battle for the employment status of a good chunk of the population. A healthy civil service sidesteps all of this.