From what I remember in Hungary thirty-ish years ago: Professional AV was Commodore Amiga. DTP used Mac because of QuarkXPress. Professional design used SGI Indigo.

IBM PC was office and in this period it became the gaming machine. Even before Commodore went bankrupt, the Gravis Ultrasound and Wolfenstein 3D dethroned the Amiga. https://youtu.be/wsADJa-23Sg has an excellent explanation why Wolfenstein 3D couldn't be done on the Amiga. The GUS was key in moving the demoscene to the PC and while obviously that's extremely niche it literally demonstrated what the PC is capable of and had a huge effect on the game creators. The first Assembly was organized in 1992 by two Amiga groups and Future Crew but just one year the latter released Second Reality and the Amiga was no more.