I ate a lot of popcorn during the Microsoft trials - plural - and the received wisdom from previous generations that was already being forgotten at the time is this bit of torch-passing, which I now impart to you.

Anti-trust cases usually only succeed once the court of public opinion has turned against the monopolist. If the public is still in favor or ambivalent, then you will not find the political will to successfully prosecute your case.

But once the company has abused their power enough to turn the public against them (arrogance in addition to greed), then the charges tend to stick.

My read is that there is no amount of lobbying that can be successful once the pitchforks have come out. But it could also be how many whistleblowers you can hunt up. Once your brother is giving you shit for working for the Evil Empire, it's a lot easier to get up the courage to be a witness.