Carbon offsets are not a structural solution though. Most offsets right now reduce emissions elsewhere, where it's either cheaper or technologically more feasible. However, eventually we'll run out of those, and offsets will actually need to capture carbon from the atmosphere. Since there's no feasible synthetic carbon sequestration process invented yet, practically that means you have to increase biomass, and ensure it remains biomass in perpetuity. That can only be taken so far, at a certain point you'll run out of space to plant forests.