I've seen many plans, and none of them are feasible both from a physical sense, and an economic sense.

In California they want to pull CO2 from the air and pump it into oil reservoirs underground. A kind of reverse fracking. This takes something that has no intrinsic value CO2 and uses it to destroy something that has value, oil.

Even if rich countries have the money to waste with this, poor countries still need cheap energy and will be using fossil fuels for decades.

There may be better ways to pull CO2 from the air such as using agriculture, but DAC is not the answer.