A Sci-Fi/Fantasy book shop I used to frequent back in the mid to late 90s ran his entire business on an Amiga3000. When I saw it I asked him why the Amiga and why not a Windows PC. His reply was that he had been using Amigas for a years and on top of that, he tried using a Windows PC but it was unable to do what he needed it to do.
The Amiga 3000 though, was able to handle Fax, answering machine, receipts, catalog inventories etc basically everything his business required. He used it for a number of years. In the end, he had no choice but to set up a Windows PC because the system used for ordering in stock was changed to one which had to run under Windows.