I'll agree with Gis... One can only speculate about their decisions.
But, I think the most important factor, and I've argued this before, is that for a toy like playmobil to sell a lot needs a constant renewal of themes and sets...in a video/computer game world, children need to see constant change in a non-digital product in order to reflect upon it and ask for it, and play with it...
Constant change is a trend in our modern society unfortunately...we as individuals, and companies like playmobil, need to constanlty manuver and adapt...