Jesus was in favor of government intervention in a market economy?
The teaching of Christ is in harmony with the whole teaching of His Church including the teachings of the Old Testament and Christian doctrine developed in the following centuries under the inspiration of the Holy Spirit. So yes, Jesus was/is both of government intervention and at the same time for personal responsibility and freedom. It is up to us to balance these things. That is why traditional Christian doctrine is opposed both to the Freemarketeerism (Liberalism in strict sense) and Communism (Socialism).
Free market ideology contains the grain of truth but in isolation from other parts of truth - this is the essence of heresy. Greek word áéñåóéò, hairesis means choice like in "pick and chose", heretics stubbornly pick one aspect of truth while denying the others. Heretics deny the catholicity (wholeness/integrity) of the truth and depart from the proper belief/worship ortho-doxy.
Love of money, trust in accumulated worldly treasures, taking advantage of the neighbors whether through the lawful contracts or not, contempt for the poor, is condemned several times in the Holy Scriptures and the other parts of Christian tradition.