Assuming you are getting the CO2 from capture and the methane from synthesis.
Meaning you would have to make sure all companies from all the countries in the world won't try to make money by using a cheaper and easier to access source of methane once there is a huge market for it.
Meaning you would have to make sure all companies from all the countries in the world won't try to make money by using a cheaper and easier to access source of methane once there is a huge market for it.
Unlikely.