I could have made money this way, and perhaps amused myself writing code. But I knew that at the end of my career, I would look back on years of building walls to divide people, and feel I had spent my life making the world a worse place. ↗
CD stores have the disadvantage of an expensive inventory, but digital bookshops would need no such thing: they could write copies at the time of sale on to memory sticks, and sell you one if you forgot your own. ↗