I completely agree with the logic. A company shouldn't sell items that aren't good but they also don't want to be stuck with the inventory.
Lets say PSI brings a new pen to market, They've invest $10,000 to stock the item. In the first few weeks after release there are 3 reviews, all of which are quite bad. In the hype they've sold $2,000 worth of stock but still have $8,000 of product in stock. Sales probably slow to a crawl due to the reviews.
Ideally they pull the product and eat the loss but if the accountants have anything to say about it they pull the reviews, sell off the stock (maybe at a small discount) and won't order it again.
On a similar example, I recently bought something off eBay and it arrived not as described (it was missing key parts). I contacted the seller and they claimed it was in the mail, a month later it never arrived. I opened a PayPal claim (which they never responeded to) and got a full credit. I left negative review on the purchase on eBay stating what happened. I received a message from the seller shortly there after offering to buy a postive feedback rating from me! I will not be doing this but it goes to show that a retailer will go out of their way to hide negative reviews.
AK