I'm not sure how it will all play out but search engines like Google , may be independently owned , yet are licensed by the Government. As long as there's competition , there is no censoring if they decide to exclude certain subjects, because there are other search engines to go to ,theoretically . However, it seems that the major search engines all have the same attitude on what kind of info and posts they don't like so , even though there are several sites, they all treat certain subjects the same . This is the concern of the Government, that these separate companies have made an unwritten agreement to exclude content they deem "Objectionable" , so you in effect have a monopoly !!
Search engines like duckduckgo , may be an alternate, but this is the first I have ever heard of them. Google is in the drivers seat because they were the first, I believe. Ask someone a question and they will say, "Google it" ! They and the others have grown so big, they write their own rules , which is the concern that alternate , opposing views are marginalized. That is a problem that needs to be addressed .