I am anarchist, the government of the nation I live in says I am a Dutch citizen though.
It is not that the a system will be implied because it is the best for the most citizens, but the ones with power will enforce a system that will be the best possible for them (that is a mixture of what is possible and the best profit they get). That said, systems that do fail will be exchanged for systems somewhat better or will be exchanged for systems that do fail too like in Afghanistan, Somalia, Libya and Iraq.
The so called socialist states like USSR were in my opinion not socialist at all and I am glad that almost all are vanquished (still the authoritarian states like North Korea and White Russia have such state-socialism and I do hope a regime change will be done by the citizens there).