From reading your comments, it appears like you have confused having a competitive advantage with anti-competitive practices. Just because YouTube has access to cheap resources by its parent does not prevent a competitor from existing in or entering the market. Facebook, Instagram, Tik Tok are doing just fine without access to Google's resources. There are other practices that Google does which might fit the bill (e.g. ranking and prominence in search results, Android, etc.), but this isn't one of them.