A lot goes into each visit to the internet: A single, casual trip online requires access to a device, an operating system and likely some combination of web browser, search engine and dedicated apps. So much of this digital real estate is owned and operated by so few companies. Apple Inc. dominates mobile devices, and Alphabet Inc. has more than a 50% market share in browsers and search, as well as the top two visited websites worldwide. In the US, Meta Platforms Inc. controls all three of the most popular social media services.