In Norway, they use a high ~~8% feed from natural gas. Extracting from the atmosphere will ~~100 times as costly and I think these atmospheric capture ones are scams. The exception is the making of liquid oxygen from the air for steel production, where entrained CO2 and Neon and Argon are entrained by products at arbitrary cost
What I found interesting is that storing almost-pure CO2 (which is what they are doing) looks pretty economical. They are a special case that allows to separate pure CO2 as a side-product of their process.
But standard combustion processes output air with a single-digit percent of CO2, and there seems to be no cheap way to change that or separate it from air.
