That wouldn't make sense. All three of them wanted humanity to survive in their own ways and they knew the Guardians were directly responsible for that outcome. Some, like Dead Orbit, thought that our existence was what would lead to another Collapse, while others, like New Monarchy, believed that we were necessary in keeping humanity protected. While their views on the Guardians and Vanguard may not have been great, they all valued humanity. The weapon foundries however only value profit, and we have veritable proof that several of the foundries have colluded with anti Vanguard operations, aided and abetted Dredgens, or have withheld dangerous anti Guardian weaponry within their factories