As for the piano biz too bad there isn't a cyber way to teach, my little ladies (at least one) seems eager to give the piano a try.
Thinking on this...
Do-able I bet!
Skype, or FaceTime technology that is improving every year, with a webcam camera on both the student, and Alan in his piano shed, a virtual private lesson, nudging his cyber-students as they show off their growing abilities at their keyboards in their own homes...when the connection gets fast enough (probably not for a while) they could even play duets!
or another thought, is to do like other teachers do, the teacher creates a series of instructional videos, uploaded free (privately) to YouTube. That each student could watch, and learn from. They then record their own performances at the piano, using a video camera (even the ones built into modern cel phones these days) and upload to YouTube (some can even do it directly from the phone now, even without a computer) for Alan to see. That way he could see and hear how they are progressing, make individual comments to the students, grade them.
I would have loved it if this kind of thing was available back when I was trying to learn piano, because it would have given me a chance to deal with performance anxiety issues when going to my piano teacher's house, playing on a different piano than the dodgy upright (or plastic-keyed synthesizer) I had at home!
(Aye, UP with Mig!!! )

(and look, the KA kitty smiley is back!!

)