https://www.reuters.com/article/us-fitbit-m-a-alphabet-australia/australian-regulator-rejects-googles-undertaking-over-fitbit-competition-concerns-idUSKBN28V2Y7 >Australia's antitrust regulator on Tuesday rejected an undertaking by Alphabet Inc-owned Google that sought to address competition concerns over its planned $2.1 billion acquisition of fitness tracker maker Fitbit.