Please consider that some authors do not want their software to be freely developed after they have abandoned it. It is all fine and dandy to label them as greedy because of that, but I also think that our demands for free software is also a bit greedy. It goes both ways.

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I tend to agree. The counter argument, of course, is why doesn't the developer release the source code so that others can follow up? Having looked at some code that I wrote ten years ago, I know the answer: it is inelegant, looks awful, the comments made some sense at the time, but there is no easy way to explain all of the cludges and workarounds that seem bizarre if you are coding strictly to the APIs.