What copyrights do Google and Amazon rely on to stay a monopoly? Actually, it feels like with everything hosted server side these days there really isn't a lot

What copyrights do Google and Amazon rely on to stay a monopoly? Actually, it feels like with everything hosted server side these days there really isn't a lot of benefit to IP protection to tech companies. Media companies yes, tech companies not really. Even if all of googles source code was stolen today, and it was legal for people to use it, would that really change anything for google?