My mother died after spending a long period in an Alzheimer's home. This song accurately portrays the change from somebody we once knew into somebody who is totally removed from us in mind, but not in body.

You should post the words. They are a little bit hard to understand.. I had to listen multiple times to catch them.

IMO, There is a market for this song. It has high identification factor and strong emotional appeal.
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DISCLAIMERS:
1) It's just my opinion
2) Your mileage may vary
3) I agree that other factors beside those mentioned here also apply
4) I have no desire to fight. If my post came across that way, then you probably missed my point
5) Caveat Emptor