It may have had something to do with what was available at the time... For myself I had an old Mac plus and it had basic and HyperCard. Creating graphical games was HARD in basic. In HyperCard I could just draw a picture in it, make areas clickable add some script and voila! I made little cheesy Myst-like games.

As it progressed they made it easier to play music on queue and play video. Eventually I moved onto the web but the web was also complicated by JavaScript which I avoided for years.