Australia’s antitrust regulator warned Google’s planned $2.1 billion acquisition of fitness tracker maker Fitbit may give it too much of people’s data, potentially hurting competition in health and online advertising markets. The Australian Competition and Consumer Commission (ACCC) is the first regulator to voice concerns about the deal in a preliminary decision on Thursday. The Alphabet Inc (GOOGL.O)-owned tech giant is already at loggerheads with the Australian government over planned ...