What, exactly, does that (bolded above) mean? Amazon has plenty of competition and has resulted in many more retail outlets creating online shopping opportunities.
While I disagree on most of what she says, Elizabeth Warren also advocates for breaking apart Amazon Marketing and Amazon Retail. Here is why:
1. Amazon takes 15%, plus as much as another 25% for advertising if you want to be at or near the top of page 1 - where 90% of sales occurs.
2. Amazon monitors sales and uses this information to determine what products to sell themself, to compete with their own merchants. Over 50% of all items listed on Amazon are products being sold by Amazon. Probably 75% of all sales are now Amazon products - which originally was 0%.
3. Amazon then buys the product, using its size for the lowest wholesale prices.
4. Amazon puts their product at the top of the page - not paying 15% nor the 25% advertising - saving 40% - meaning no one can compete on Amazon. So your company is paying 35%+ to Amazon, but your sales crash as Amazon puts their identical item above yours - and since Amazon saves 35%, you can not match their price.
5. Google puts Amazon at or near the top of page one of searches - even over Google paid advertisers. Another free-be to Amazon you don't get - for 80% of the market advertising. You have to charge more too, because you ARE paying Google advertising money, Amazon isn't.
6. Google is nearly 80% of Internet searches.
7. Amazon pays dramatically lower postage rates to the post office, so no other business can compete on shipping charges - which commonly actually are higher than the product cost for small items.
As a result of these unfair advantages by the collaboration of THE two largest Internet giants, no other business can compete because of their massive size and collaboration. As Amazon eliminates competitors, Amazon raises its prices (for example, Amazon prices are notably higher than Ebay because Ebay is not a retailer) - so in the end the consumer loses and Amazon's profits go even higher per sale, not just sales volume.
As the monstrosity grew, the Post Office became dependent - the term is "captured vendor" for which Amazon dictates to the Post Office the terms and shipping prices. Since the government underwrites the Post Office, the result has become we - the taxpayers - pay $1.43 in post office subsidizing for every package Amazon ships. Amazon ships billions of packages, so we the taxpayers literally are just giving Amazon billions per year.
To try to somewhat offset this, the post office has rapidly been raising postal rates on US, but not Amazon. So everyone now pays higher post office mailing and shipping costs because of Amazon, costs Amazon does not pay.
Now Amazon/Google - for their massive size and take over of the markets - is going to do their own delivery - but ONLY to major urban areas for density - which is the lowest cost deliveries for the Post Office, UPS and FedEx - leaving particularly the post office having to do the costly rural and small town deliveries, while Amazon sucks up the easy high density urban shipping.
Google, of course, is a media outlet in that they select what news to feature. Amazon is buying up newspapers also to try to influence politics to it's advantage and to control the tax code - for which Google and Amazon both essentially pay no taxes - though the most profitable companies on earth. Google/Facebook/YouTube is buying out every competitor - being starved out by Google - further eliminating competition.
THAT is the problem(s) with MASSIVE monopolies that overwhelmingly dominate the market. They "win" by using their massive size and money as a weapon itself. I could explain in more detail how mass money can crush competition. For example, demanding suppliers sell to them at a significantly lower price that other merchants or even to buy entire production so no one but Amazon can sell it. In addition, the massive size justified offshoring manufacturing, literally building factories in China.
By Google and Amazon listing their own products they produce themselves, they then also eliminate other manufacturers (and their jobs).
Added to this, Amazon requires any dispute may NOT be taken to court, only mediated, so Amazon is the trademark, patent and copyright infringement center of the world. You could make 101 complaints that your patented and trademark product is being violated by sales of Chinese knock-offs - and all that will happen is in a week or two, they will remove the listing, but 2 more takes it's place the next day. All you can do is mediate - and in a year or 2 a mediator decides - but knowing if he goes against Amazon that Amazon will strike the mediator from any list in the future.