Re: "Antitrust" ... misused as regularly as "Antisemitism".
Google claim their algorithms are applied equally to all sites, with no special cases. But here's the problem: what if Google decree it is in the customer's interest that the algorithm selects universally and without discrimination for sites beginning with a Y and ending in an E and in Google's opinion that serves user interest best. Hmmm Vimeo isn't going to fare so well but YouTube will do just fine. Ok well perhaps that's a bit too crude and Google would never do that (even though we have no way of knowing for sure), because, if we did know, it would be clearly indefensible; perhaps the algorithm selects for sites with video's that have the most comments. Oh wow, wadaya know; again YouTube comes out on top.
Now let's say Vimeo adapt their website, encourage lots of commenting and just happen to meet the criteria, such that they are favoured by Google's algorithm (even though they can never be sure because the algorithm is secret). But hold on, Google, who tweak their algorithms all the time, suddenly "decide" user interest is best met by prioritising Video's where image analysis indicates they have been taken from an angle indicating the video is a selfie, and oh, since video comments are asinine and put right minded people off, they will be de-prioritised. This algorithm change is applied equally to all websites and without discrimination. Google say "hand on heart, we are just doing what the users want most" and since that is a matter of opinion and video comments are truly asinine, who's to argue? And YouTube it just so happens has many more selfie videos than Vimeo. But honest guv it's all being done in the best interests of the user, selfie videos are really popular these days and the word has even made it into the Oxford English Dictionary and everything.
Clearly I have provided some crude example algorithmic rules to illustrate the point, but the point is, hopefully, clear: Google's claim that they don't discriminate against competitors with their algorithms and apply their rules universally is spin, on a spinning top, on a roundabout, it means less than absolutely nothing; It is disingenuous and treats the people they are saying it too as fools. But it appears some people swallow the line anyway. So Google it seems, do in certain key regards, understand their audience.