This exactly. As long as people think "oh, I'll just vote to give myself free shit and who gives a fuck about the consequences to society", the democratic system is inherently unstable.

Any form of government only works if the people with power care more about the success of society than their own personal benefit. In a democracy, we give power to the people... but the need for selflessness hasn't gone away. Anyone who demonstrates that they care more about themselves than about their society should be a civilian, not a citizen.