The largest technology firms have increasingly been scrutinized by competition enforcers and governments that are concerned with potential anti-competitive behavior. Recent European cases involving Google, Amazon and Facebook, as well as the acquisition of numerous smaller firms by large technology companies, have spurred a lively debate, particularly with regard to the adequacy of current competition policy frameworks in dealing with competition issues. In this article, the authors focus on three recurring concerns raised for large technology companies in various jurisdictions, as well as the leading proposals to address them: killer acquisitions by large technology firms; exclusionary practices surrounding data access; and exploitation of consumers through data abuse.