In terms of competition law, the skins-over-webkit they do allow are plenty. Anti-trust doesn't so much care about competition to improve web APIs. Because it'

In terms of competition law, the skins-over-webkit they do allow are plenty. Anti-trust doesn't so much care about competition to improve web APIs. Because it's not really a market, what with no money changing hands etc. In MS/IE/Netscape times, the idea of licensing browsers was still fresh. And, more importantly, browsers differed In more than just synthetic benchmark scores: IE had ActiveX plugins that weren't available for any browser or operating system, and those were widely used, discriminating against other OS, an actual market. A similar situation would be Apple intentionally crippling Google Docs, or amazon.com. The changes to ads and tracking are the closest we've gotten in the last decade, and Apple has a pretty good case that they are doing so with the user's interest in mind.