In my experience Airbnb isn’t even cheaper, just has more “interesting” housing available. Back to the topic - removing listings isn’t a sufficient enough punishment imho. And how would you even prove it from the guests side? Take a picture I suppose? But how do you stop bad actors? Not sure what the correct solution is. Someone who wants to spy can purchase a spy camera which is very abundant these days.
Now it's commoditized and a business, and the quirky and cheap options are few and far between.
Part of the degradation is both the company, the sellers, and the buyers - back in the very beginning it wasn't well known and most of the customers were well behaved - I'm not sure that's entirely the case now, as the customer base has grown.