Seems as though it was years ago they started that. They do this “showing of other sellers” stuff on other sites as well (EBay, Etsy, AliExpress etc). I have to admit when I am on any of the above sites and someone else’s listing catches my eye, I do click on it to compare it to the listings I am looking at for any particular product. So, yes, I can see where having those who sell the same basic service as us (and perhaps cheaper) can lure potential buyers off our pages. Thing is, you can get lost in a rabbit hole once you start following suggested listings at the bottom of other listings, and it can end up where you forgot where you started and that initial seller you looked at my not get the sale.