Thanks, Lisa and Louise, for your insights (see previous post and comments). I think you're both on the same page--i.e. that electronic media is here to stay and that we'll adapt.
It does occur to me that the world of children's publishing may be slower to change (not counting the everybody-is-losing-their-jobs part). Kids' books--especially for younger children--almost have to take a book form, don't they? Can a pre-schooler really snuggle up in your lap to read WHERE THE WILD THINGS ARE if there's already a laptop there? I don't know. Maybe. Everyone younger than I am is completely wired and tech-y these days.