>>64509858
>All it takes
Is a massive understatement.
It takes ridiculous amounts of luck and self-destructive attitudes to enable such a situation to happen.
And it still doesn't remove the possibility that the alliance just decides to kill your outsider species as a dog, because they don't want you around potentially threatening them in the future. They already have their happy alliance, so why would they risk you and suffer your presence? Better to just wipe you out now before you can grow to become a threat or competition to their own alliance. You can look at how the West, despite being so friendly and allied, wipes out people like Saddam and Gaddafi. Upstart outsiders trying to get into the game and destabilize Western systems die.