If I may be permitted the indulgence of adding my thoughts to an already tired topic, I'd say that Hyperion have every right to protect their investment.
One of the reasons why the Mac is so damned expensive is that you're paying for both software AND hardware development without the economies of scale that Microsoft/AMD/Intel all enjoy. Fact is that Hyperion don't need to be in the Amiga market to survive, but I'm damn glad that they - together with those behind MorphOS too - have decided to turn their back on the profitability of the x86 market and do something a little different. However, to re-write an entire operating system takes time and programmers need to be paid. I'm sure there's many programmers out there who'd love to have played a part in OS4, but they've got bills to pay too.
Although I'm quite cynical about things in this so called community of ours, I'm grateful that there are still companies who see a future in it (Hyperion) and individuals who'll try and act to bring something new (MorphOS).