Github isn't the only source control software in the market. Unless they're doing something obvious and nefarious, its doubtful the justice department will step in when you can simply choose one of many others like Bitbucket, Sourcetree, Gitlab, SVN, CVS, Fossil, DARCS, or Bazaar.
There's just too much competition in the market right now for the govt to do anything.
I doubt policymakers in the early 1900s could have predicted the impact of technology and globalization on the corporate landscape, especially vis a vis “vertical integration”.
Personally, I think vertical integration is a pretty big blind spot in laws and policies that are meant to ensure that consumers are not negatively impacted by anticompetitive corporate practices. Sure, “competition” may exist, but the market activity often shifts meaningfully in a direction that is harmful consumers once the biggest players swallow another piece of the supply chain (or product concept), and not just their competitors.
The other change is reluctance to break up companies. AT&T break up was big deal. Microsoft survived being broken up in its antitrust trial. Tech companies can only be broken up vertically, but maybe the forced competition would be enough.
Not really. It's a network effect, like Facebook. Value scales quadratically with the number of users, because nobody wants to "have to check two apps".
We should buy out monopolies like the Chinese government does. If you corner the market, then you get a little payout and a "You beat capitalism! Play again?" prize. Other companies can still compete but the customers will get a nice state-funded high-quality option forever.
Simple: the US stopped caring about antitrust decades ago.
There was just a recent case with Google to decide if they would have to sell Chrome. Of course the Judge ruled no. Nowadays you can have a monopoly in 20 adjacent industries and the courts will say it's fine.
If a company can build a monopoly (or oligopoly) in multiple markets, it can then use these monopolies to build stability for them all. For example, Google uses ads on the Google Search homepage to build a browser near-monopoly and uses Chrome to push people to use Google Search homepage. Both markets have to be attacked simultaneously by competitors to have a fighting chance.