 Will a libertarian always vote for less government action?

The current system is dominated by government action, so fixing problems often requires even more government action. This does not say anything as to the feasibility of a fully libertarian system. Private entities take time to develop and immediately dismantling entire government institutions may not be the best move, hence why companies benefitting from government aid and intellectual property also need antitrust legislation, and why suddenly cutting subsidies/welfare can hurt a lot of people.