A reason why competent graphics designers design ugly templates?

Most corporate PowerPoint templates are ugly and take up too much screen real estate. Most corporate PowerPoint templates are designed by professional graphics designers. This does not make sense? I just realized, here is probably why: graphics designers design the template on an empty screen (or Microsoft's bullet point opening screen). Uh oh, need to fill up that white space with something interesting.

The solution: next time your PowerPoint template is up for renewal, hand the graphics designer a real slide deck and tell her: put this presentation in a new template. My guess is you would get far better results.