Can you name 1 time gov anti trust policy was beneficial?
Ma Bell?
I am not certain if it was an anti-trust action, but when they broke AT&T apart, phone rates went down (up until the break-up long distance calls were 25 cents a minute in 1970 money), service went up, and innovation went off the charts.
But there are lots of examples of beneficial antitrust actions going back to Standard Oil. AT&T breakup and the consent decree against IBM are two more examples; both of those lowered costs to consumers and led to greater innovation in the affected industries.
Not all monopolies are illegal. We actually have some areas where they're needed.
But you should not be fooled into believing that large corporations are beneficial to free market capitalism; they aren't. Their CEO's are typically fascists--I won't say "crony capitalists" because there is no such thing--who do everything they can to destroy competition and force costs up for their small competitors, who are the real engines of capitalist economies.