Meta, Google, and Amazon have all been sued for illegally maintaining monopolies. [1] [2] [3]

[1] https://www.ftc.gov/news-events/news/press-releases/2020/12/...

[2] https://www.justice.gov/opa/pr/justice-department-sues-googl...

[3] https://www.ftc.gov/news-events/news/press-releases/2023/09/...