Michael, you clearly feel very strongly about this issue. On the point of disclosure having a societal benefit and that being one of the intents of setting up a patent system, your idea disagrees with what I've read in patent law, discussed with patent attorneys and seen in legal historeis and from constitutional scholars. Here's an excerpt from Wikipedia's summary of that one (of four) intents of patent law:
"In accordance with the original definition of the term "patent," patents facilitate and encourage disclosure of innovations into the public domain for the common good. If inventors did not have the legal protection of patents, in many cases, they would prefer or tend to keep their inventions secret. Awarding patents generally makes the details of new technology publicly available, for exploitation by anyone after the patent expires, or for further improvement by other inventors. Furthermore, when a patent's term has expired, the public record ensures that the patentee's idea is not lost to humanity."
Other intents of patent law do include motivating inventors by allowing them to profit from their ideas. But that is not the only intent.
Interstingly (or not?), I've had this argument arise in two romantic relationships. In each, her father had been a smart, clever guy - an elite university prof in one case - who each fancied themselves an inventor. Now, while they pursued patents and got some (including a hybrid vehicle circa 1970), they never made any money at it. I quickly learned to avoid the whole topic, but I inferred there'd been a husband-wife conflict in each case. He arguing that a clever invention would be a financial windfall and she experiencing more single-parenting, expenses, and NO windfall, ever.
The rub, in my relationships, is that they would push me to patent my ideas, despite their father never having profitted. I found it akin to Catholics believing in miracles without ever experiencing them and consistently being denied the miracles they so often prayed for.
Beliefs (in miracles, fantastic rewards from patents, the Great American Novel, etc) are strange - not only do they deny any evidence or statute to the contrary, they get even more entrenched by pesky, annoying facts to the contrary.