VendorExpress was an initiative designed to get rid of 3P sellers and create a direct relationship with manufacturers. It sort of worked. The 3P sellers started pretending that they were manufacturers though. They recently sunset/sunsat/sunsetted that program.
The new program, OneVendor, will give Amazon a lot more control of who sells what and how. And their new Transparency program will eliminate a lot of the middle men playing the arbitrage game all together.
It's worth noting that most of the complaints against Amazon are from middlemen, scammers and arbitrageurs who make a living as leeches. When Amazon destroys their "business", they sue. While it's true that prices on Amazon are going up that's not necessarily a bad thing. You often have a situation where a manufacturer's items are leaking out into the Amazon ecosystem through arbitrageurs. When they finally take control of their own product listings they want to raise prices to parity with the rest of retail. The arbitrageurs lose. Amazon wins. The manufacturer wins. Traditional retail wins because Amazon is no longer undercutting them so deeply. And while the customer does lose, in a sense by paying more, the customer service is greatly increased.
Transparency isn't that new, over a year old by now. And it doesn't eliminate middle men since it requires the manufacturer to label all their products regardless of source.
I’m assuming you aren’t being sarcastic.