Another thing to notice:
Historically speaking, whenever you bought a real Amiga, it ALWAYS came with a set of AmigaOS floppies, maybe not the latest ones corresponding to that specific kickstart though. The point is, that Amigas were always sold with its OS, so if you have a real Amiga, you are always entitled to legally obtain its corresponding AmigaOS disk set without paying any royalties whatsoever for that specific machine. Unless, of course, you wanted the copying service, and nicely labeled floppies, from withing CBM/Escom and then you had to pay for that, but that its obvious.
Furthermore, if you see it from another perspective, whenever you acquired legit Amiga kickstart roms and or complete systems you always had the core/kernel of the AmigaOS built inside those roms. So in the end, this way, you were/are always entitled to freely and legally obtain its corresponding distribution media.