https://www.reuters.com/article/us-usa-tech-congress/big-tech-ceos-to-defend-their-companies-before-u-s-congress-by-listing-competitors-idUSKCN24T2VE >The chief executives of four of the world's largest tech companies, Amazon.com Inc , Facebook Inc , Apple and Alphabet's Google , plan to argue in a congressional hearing on antitrust on Wednesday that they face intense competition from each other and from other rivals.