As a society plunges into dysfunction due to economic stress, the number of people harming one another increases. If the society responds using more laws, and fails to correct the source of the dysfunction, it will eventually collapse under the weight of those laws as enforcement becomes uneven and politically driven. (This is the failure mode of legalist and bureaucratic states.) Alternatively, if the society responds with a more arbitrary case-by-case system of punishment, it will collapse into mob rule or dictatorship, so lack of structured law isn’t a solution either.
The only real solution is to fix the root problems facing the society. Antitrust helps with this because it can “unstick” parasitic incumbents who are preventing the market from dynamically responding to real economic conditions.