Back on topic though, you're right that we have to draw the line somewhere; I'd rather draw the line at zero. Nothing can be patented, and no business idea deserves any kind of special protection. If your idea cannot survive in the free market on merit alone it has no place in the market at all.
Oh, I am sure my Great Idea will survive in the market just fine, however it won't benefit my company at all. Immediately after putting it on market, bigger and richer competition will just copy it, set up mass production and use huge advertising campaign to grab all sales. In this case why should I even bother trying to innovate?
BTW, would Poland have objected so much if the Germans asked them to join in a crusade against the Godless Communists on their Eastern border, instead of what happened?
Actually Ribbentrop proposed that Poland joins anti-soviet pact during meeting with ambassador Lipski on 24 Oct 1938 . It was of course declined.