[byoung2]

Google has a dominant position in the maps app market and Uber is a company they've invested in. Is it legal for them to leverage their monopoly in this area to exclusively promote one of their portfolio companies?

It appears legal:

The Federal Trade Commission said Thursday it wouldn't bring charges against Google after a 19-month investigation into whether the company favored its own products and services in its search results and unfairly harmed rivals.

[1] http://online.wsj.com/news/articles/SB1000142412788732387420...