Yeah, it's easy to determine who is a pirate. Certainly, someone who releases software without a license can't expect a cent for it. Yoofs selling adapters on *Bay and supplying copied disks, the content of which Amigakit has bought the rights for, is piracy. You know, copying stuff that costs money.
I don't think Amigakit will go bankrupt since it's one of many products, but it's not subtle. At one point, if it gets worse, Amigakit and devs might tire, and if you like to persuade them to bring new products, buy from them and not from people making pocket change on auction sites!