On a general, short term scope analysis:

- if a firmware release is required to enter a new market, profit is not possible unless you release the firmware release for that market.

- if a firmware release isn't required to keep the money from people that have already bought your product, releasing it doesn't generate any short term profit.

*shrug*

Personally, in this context I just think they're not releasing the firmware update because it hasn't completed quality testing successfully. I mean, that seems to be a very obvious reason for me.