Directly? Nope. Indirectly? I guess. Google stores information about you to make the ads more relevant to you. If someone is using/have used g+ and have liked

Directly? Nope. Indirectly? I guess. Google stores information about you to make the ads more relevant to you. If someone is using/have used g+ and have liked a few profile/pages(not sure what they're called) then google surely is more confident about this data than other data, so it might help google drive more business by targeting better. Again, as someone else pointed out, most of the google products are operating at a loss only at individual product level. You can think of it as another example for 80-20 Principle.