No, you are implying that. I'm saying that evil are (primarily) those who use it, not (just) those who make it. You can try to make whatever you want, if nobody will buy it to fund it, then you won't have money to make it, so your evil thign won't exist. Palantir only exists because governments are evil and willing to fund it to buy it and use it. If you want likes of Palantir to not exist then you need to hold your government accountable to not spend money on evil things.
Are gun makers evil and responsible whenever someone gets killed by a murderer, or are those who pull the trigger responsible for who they kill?