Living in the past

You know I really feel Master Schulenburg is living in the past. For example, he wrote a program for his wife. What's wrong with this? Why reinvent the wheel when you don't have to?
There are other programs out there for martial arts. Couldn't he find one that fit his needs? Instead of spending the time programming it himself?

Or let's say he couldn't find a program to fit his needs, couldn't find an opensource program then alter it to fit his needs and submit the code? Then others would be able to use the program and he could used it to drive traffic to his business. But no instead he has selfishly decided to keep it for himself.

Or perhaps he could find someone else to make the program instead and given them a royalty for their work. Then he wouldn't have to spend the time programming himself. Also he would help get other people work.

Does a master craftsman spend all his time doing all the work himself? Or does he have tell others what to do? Shouldn't a master craftsman use the right tools for the right job? Shouldn't he be guiding the apprentices and journeyman in their work?