The following three fictional examples illustrate how gene - brain - environment interactions can lead to addiction. (jax.org)
One fictional example of what you are describing is the unification government type in the PC game Masters of Orion 2, but this relies on non-human aliens being fundamentally different from humans. (politics.stackexchange.com)
I am not interested fictional examples (e.g. Queen Amidala of the Star Wars Universe) or mythical examples. (politics.stackexchange.com)