Partially. Mostly, it's to be able to fold up and relaunch whenever. There's no need to keep or invest in reputation when it's disposable or not positive. OTOH,

Partially. Mostly, it's to be able to fold up and relaunch whenever. There's no need to keep or invest in reputation when it's disposable or not positive. OTOH, shill purchases of cheap items, SKU reuse, and nagging customers to leave reviews can inflate an items's rating. Also, it's too much work for most manufacturers and vendors who are essentially selling low-end "flea market" items that they themselves wouldn't purchase. AliExpress and drop shippers on Amazon, eBay, and Etsy are guilty of pushing low-end items with barely / no concern for regulatory standards. I mean, have you seen the flaws in the USB deathdapters sold in the US and the "shower heaters" and "baby water heater" sold to South America that expose live wires.