The thing with Amazon is that its primary selling point isn't the goods on the site, it's convenience. Amazon is relatively cheap, fast, and easy. As long as it continues to be cheap, fast, and easy, people are willing to overlook poor quality to a point. It's the same formula that Walmart used just applied to online shopping.

You need to understand why people buy your products in order to know where you can cut corners. If for instance you're already more expensive than your competition, but your product quality or features are superior, you can't really afford to cut down your quality, unless you're willing to undercut your competition on price as well. Depending on your margins and unit costs you may not be able to even do that.

Assuming a 10% revenue drop is probably optimistic, particularly with how much backlash generative content is receiving right now. There are quite a few companies dealing with PR shitstorms right now because they got caught using generated images or articles. There are a lot of parallels at the moment with the NFT craze and how executives rushed to cash grab on that trend only to immediately backtrack when public opinion flipped practically overnight. The only silver lining for these executives in this case is that there actually are a ton of legitimate uses for this tech, unlike NFTs which have vanishing few worthwhile uses.