So, for $4.3 trillion dollars / year we can turn the 43 billion tonnes of CO2 we emit per year into oxygen and carbon crust. Which is twice the annual revenue for the global oil industry.
Well, don’t forget the cost to concentrate CO2 from 440 ppm in the atmosphere to 10^6 ppm. The current cost of direct air capture that I’ve seen is about $600-$1000/ton (via Climeworks).
Capturing CO2 from flue gas at power plants should be a good bit cheaper, but I think it’s still significant.
That is assuming it takes less than a year to convert all that amount. At the given rate of .1 liter/minute, you'd need a lot of those installations or quite the scale-up.
That would make it pretty feasible. A 25% reduction in consumption (if the activity were purely subtractive from the economy, which it probably wouldn't be) is manageable.
That means that for every $1 the oil industry makes, it is creating $2 of debt for future generations.
This is vandalism, pure and simple