I think the other piece to look at is market cap. Microsoft, Apple, Amazon, Alphabet/Google, Facebook, Tencent, and Alibaba are huge. I'd focus enforcement eff

I think the other piece to look at is market cap. Microsoft, Apple, Amazon, Alphabet/Google, Facebook, Tencent, and Alibaba are huge. I'd focus enforcement efforts on those. They're also high-growth. Of all of those, Amazon/Google/Facebook are the most antitrusty. Of those, Google is causing the most immediate anticompetitive harm (not harm in general; Facebook leads there; anticompetitive harm). It seems a natural target.