Shifting towards environmentally friendly practices does cost money, yes, and that money will have to come from somewhere. Directly imposing it on companies will naturally cause it to be passed on to the consumer in higher prices.
You seem to be suggesting that we should somehow magically eliminate climate-harmful processes while preserving the cheap costs, the demand for which being exactly what got us into this mess in the first place. The world doesn't work that way.
But, again, the money raised can be used towards investing into and subsidizing climate-friendly processes, which can result in those products being cost-competitive.