Cheap energy is critical to massive carbon removal. I think solar might also be the answer
Solar is definitely more attainable on the commercial level right now. On the other hand, ITER so far has cost “mere” tens of billions of dollars, so it’s not unimaginable for VC to fund parallel tokamak research if they’re willing to wait a long time to realize return. Solar power is a lot easier to harvest if you can build your own sun :)
It makes sense to do this if hydrocarbons are still more energy-dense than batteries, for instance. If we end up inventing fusion power before we invent an electric jet airliner, for instance.