Opera is expensive. They have been burned several times by companies who pulled out and didn't pay up for what was owed (sound familiar?). Their revenue from their desktop browsers (Opera for Windows, linux, etc) is less than a third of their total revenue, despite it being used by hundreds of thousands to millions of people around the world. They are a privately owned company and aren't in a position to do charity work, which is what a port would be right now. If a platform could guarantee a large (hundreds of thousands) number of sales and someone was willing to pay up-front for the porting costs, they might do it. But it would be an expensive deal.
