The Iceland plant will pull 4000 metric tons of CO2 / year, so my toilet-paper math says we're going to need at least 9 million more of these plants to achieve net zero.
Sorry for the misplaced optimism , if it makes you feel more bleak, building all those DAC facilities, transporting them and running them will require millions more of DAC facilities.
36-37 Billion tonnes of CO2/yr, ..