Let's say the IRS wants to be able to confiscate bitcoins from tax evaders. So they go to the US courts to get this. A judge ends up ordering the bitcoin.org dev team to include a government backdoor so the IRS can take funds away from those who don't pay taxes.
The devs would be forced to comply right?
The devs are not forced to comply because they can simply abandon the project. They have no obligation to contribute to the project.
If the government want to add a backdoor, they can always hire a programmer to work on that. They can also confiscate the bitcoin.org and put their version of bitcoin there.
However, people can still contribute to the original bitcoin project anonymously, e.g. through TOR network. In that case, a hardfork will happen: the original bitcoin and censored bitcoin