Google's dominant market position was achieved through market competition not through impairing the ability of smaller companies to enter markets. Even in Google Chrome you can pick DuckDuckGo and Ecosia as your default search engine. Most of Chrome users probably never heard of those two search engines.
For example would YouTube be successful as it is today if it wasn't Google's resources and knowledge to skyrocket it? I think not.
For example would YouTube be successful as it is today if it wasn't Google's resources and knowledge to skyrocket it? I think not.