The fire jackets are a reason for immigrants to come to us
You think human migrants will go to dwarfs? Really?
It's not like I offered to give all firejackets away
and it gives us a safe monopoly.
That's why license agreement is needed
but the main reason is to have them as a unique boon to our domain.
Nah, we can create something new. And again I doubt that dwarf fortress will get huge influx of immigrants.
I also don't see a reason to build in backstabbing options without even having suspicions of antagonism.
That's called politics. It's like plans for Canada-USA war.
Besides we have no guarantees that this god will not wage war against us, for example to get our manarack by force. He is a god of war after all. That's one more reason to not boost him in a way we can't sabotage easily
Don't trust random neighbors.
And I would love to spread firejackets over world later. Why? They are loyal to us. They can live anywhere. And they represent us any being that use them have a chance to become our worshiper.... And the most importantly - Life god should be happy to spread his creation over the world
As for fire nectar monopoly
1) We still be a major producer, due to our nature (especially if we create that tree)
2) We may create subgenus and upgrade some firejackets, making our nectar the best one
3) As a life god we can create new monopolies (like fruits of Youth, from the everburning tree)
And you are too gready for one who want to play a purely benevolent god