>This will benefit the likes of Amazon more than anyone else.
A _huge_ chunk of Amazon is low effort Chinese clone / drop shipped crap or straight up forgery. I don't feel sorry for /r/entrepreneur denizens' loss.
It will help the kind of small business with core competencies revolving around producing things and hurt the kind of small business with core competencies revolving around buying things on Alibaba and selling them on Amazon.
People who actually wanted to do things well often couldn't even afford to ship their product for the entire price of product + shipping for lots of dropshipped things under the old ways. I'm happy that the class of business that monetizes outdated shipping policy are going away.