There's no way of fixing a flawed business premise.Never let it be said that Opendoor Technologies (OPEN +0.52%) stock doesn't keep things interesting. From 2021's post-IPO peak of more than $34, to this July's low of less than$1, back to its current price of nearly $8 apiece, shares of this real estate sales-listing platform have been all over the map.The latest drama? Short-sellers are selling into the recent recovery, arguing that the meme stock's run-up is rooted in misguided hopes that an actual profi ...