Sure, it's great that Patrick's found a profitable niche, and can use it as a platform to give others business advice and advance his own craft.
But it really seems as if BCC is a painful reminder of how terrible the computing experience is for most people in 2011. Patrick refers to BCC as Hello World attached to a random number generator, seemingly as an example of how business is not solely about technical prowess but fulfilling people's needs and providing a useful service as well. Yet I can't help but feel that people sitting in front of incredibly powerful general purpose computers paying someone else to make bingo cards for them is a failure of the "personal computer" vision.
This line of thinking usually gets the response "most people do not want to program their computers as they're much too busy with other things", but I really don't think this is an example of a task that requires some inordinate amount of computing skill. If it's too complex for a nontechnical user to print a bingo card with a computer today, that complexity is incidental (i.e. a bug) and should be fixed.