Anti-competitive practices on the internet

Increasing returns and network effects lead to problems when dominant firms use market power to exclude rivals or limit the ability of rivals to develop products that are interoperable. Practices of bundling products, technological tying of products, or other techniques can reduce competition and lead to high prices, reduced consumer choice or lower quality. There are particular concerns for those elements of networks that provide user interfaces for consumers, including default menus for electronic commerce and selection of editorial content.