I think if bill is a good leader of his bunch, he write this letter to Hyperion. To change the situation about os4.
Open letters in the history not wrote to everyone just adressed to everyone. Every "open letter" had its own target person.
If amigainc has much $ in its pocket, then os4 already in the market. Simply bought out from hyperion or just rewroted with 3 party developers.
Anyway if this letter has any other reason to being written, i simply don't have time for it.