An anecdote:
I have a friend - Mary - who just last week helped someone purchase a new laptop. Mary's friend has recently begun a photography business, and has all of the photos she has taken on her desktop computer. She wants to put all of these pics on her new laptop, and Mary was trying to assist her. Mary called me and asked me for help with the migration. I suggested that she use whatever backup her friend has to load the pics on the new laptop. Her friend, taking photos for
clients, has no backup. No hard drive, no DVDs, not even a thumb drive.