Amazon has majority market share in e-commerce. Google isn't even close.
It's interesting - the comments section appears to be a litany of excuses for big tech just to see what sticks. I think focusing on a single, higher-quality argument against anti-trust might be better.
Not sure what comments section you're reading. In the one I see, most of the top comments are celebrating the possibility of these companies getting broken up. There's only the niggling problem that the law probably doesn't provide a provable cause of action supporting said breaking up.
Well, I think we should change our anti-trust law to deal with platforms. I think it is pretty confident of you to say that a priori there is no legal reason you could break up these companies.
The top comment when I commented was this one https://news.ycombinator.com/item?id=24698720. You're right that the tenor of the top comments now has already shifted.
I'm actually making this statement a posteriori, specifically a posteriori of reading up on what the antitrust laws in this country currently allow and don't allow. That being said, I could easily be wrong, which is why I said "probably." :)
As to changing the laws, this is all well and good, but it's hard to see that happening under a divided government, given Democrats and Republicans have different ideas of the effects they'd like to see out of such a break-up. If they can't do something extremely popular like legalizing marijuana or providing universal healthcare, I am not sure how effective they're going to be at less popular actions like breaking up Google or Facebook. We'll see I guess.
I think the laws ought to change. I agree that it is likely that a combination of a divided government, plus political capture of Democrats by the tech industry, means that it unlikely we will see a shift towards economic justice any time soon.
Facebook isn't even a monopoly. And that would have been even more true if they hadn't been allowed to buy Instagram and WhatsApp.
I explained the process in the nutshell 2 months ago: https://news.ycombinator.com/item?id=24094535