Web browser:

In January 2009, the European Commission announced it would investigate the bundling of Internet Explorer with Windows operating systems from Microsoft, saying "Microsoft's tying of Internet Explorer to the Windows operating system harms competition between web browsers, undermines product innovation and ultimately reduces consumer choice." Microsoft Corp v Commission

Please answer a question about this article. If the question is unanswerable, say "unanswerable". The Commission felt that bundling the browser with Windows computers harmed what?
competition between web browsers