The kiosks are manufactured by http://www.neoproductsgroup.com/ but are serviced by Fuji engineers. I would expect the disk image to come from Fuji so they would be responsible.

Wouldn't the company in violation be RISCOS Ltd? [riscos.com]

Actually, no. RISCOS Ltd are responsible for RISC OS 4. The Iyonix PC uses RISC OS 5 that was developed by Castle Technology (well, developed for them but not by RISCOS Ltd).