A system where emitters can ignore the actual cost of their externalities and push them down onto society at large to handle (through taxes) is broken.
This should also result in more funding around anything green tech related, when you actually have to pay the full price of the currently-used alternatives.
Ideally, there'd be a market with buyers (capturers) and sellers (emitters) (with a negative price, so cash flows from seller to buyer, obviously) for carbon emissions where the price depends on the actual underlying cost of capture, but that will hopefully come in the future, when carbon capture is commercially viable.