Comment by iterance

Even if you assume the situations are comparable and equitable, which most commenters are focusing on, there is still a problem:

There is no reason to expect the DOJ to pursue antitrust suits against all potentially relevant companies at the same time for analogous reasons. These are complex, labor-intensive cases that frequently play off precedent established by other earlier cases. The idea that Google is being "targeted," by implication unfairly so, is out of line with how complex antitrust law can be, and the simple fact that such cases are typically serialized rather than prosecuted in bulk.