Satosuke said:
Oh come on, Bob. The 'they're mercenaries' excuse is a paper-thin cop-out and you know it. If Cameron really wanted to hammer home that specific fact, he would have actually gone into some detail as to what the hell said corporation actually does, how it amassed enough money to create its own space armada, and where the bulk of their mercs actually came from. I'm assuming that the majority were former soldiers.
You can read them as basically an energy company. The unobtanium is some kind of important energy source, so they're essentially Exxon IN SPACE.
And most mercs/PMC grunts in real life are vets from one nation's armies or another (e.g., a significant number of Blackwater operatives were former Chilean Special Forces). Pretty rational career choice for a soldier: you have some skills you learned fighting under a flag that some suits are willing to pay you 10x your old salary for--sign me up! How is that important?
Also, for better or for worse, it seems like
Avatar is one of those properties where you need to RTFM to understand half of what's going on: http://james-camerons-avatar.wikia.com/wiki/Resources_Development_Administration
For the record, I found the story painfully derivative too, but a few things made it tolerable. Although I'm all for sustainable development and environmental responsibility, I'm not for tree-hugging for tree-hugging's sake. I like living in an industrial society with the internet, phones, cars, and antibiotics, thank you very much. (A friend of mine used to say, every modern Western city is two weeks away from being the Third World: just cut off running water and sewage.)
I accepted it from the Na'vi because they could actually neurologically interface with the lifeforms on their planet, and use trees as computer databases of their memories. So it wasn't as simple as moving to a different copse of trees on the other side of the forest. When the humans destroyed Hometree, it was the equivalent of burning down the Library of Alexandria, and as a librarian, I consider that a horrendous act. You're not just burning down someone's house, you're eradicating
their culture.
The rest of the story was pretty pedestrian, but the acting, visuals and action elevated it quite a bit. It was really the main character who pissed me off. He was sent among the Na'vi to try and get them to leave their home, and he didn't even try. He knew he was the last hope for a diplomatic solution before Colonel Hardass brought down the hammer, and he was the one person whom the Colonel, Dr. Augustine and the Na'vi could respect. If anyone could have brokered a compromise, it was him. And he pissed away all his time flirting with the chief's daughter and going native until the very moment the bulldozers rolled in! It's hardly the first time I've enjoyed a sci-fi/fantasy story
despite the annoying messianic hero, but I still hate it when it happens.