You're so close. So very close.
If company A uses gas, they have to pay a little more carbon tax, and that extra costs end up in the final product.
But lucky for you! Company B also exists, they crunched the numbers and found that over the life of their vehicle it is actually cheaper to use EVs, in their case their end product is a little cheaper than what Company A could provide.
Then you go to the store and you see option A and B, you see B is cheaper and you buy it.
The carbon pricing model has now worked exactly as economists have been saying for decades.
Every province have a carbon pricing model, how did you miss that?
Provinces had the option to build their own system, or use one provided by the feds.
Judging from your other comments you have some very large fundamental misunderstandings of how the system works. I think you need to take a good hard look at where you've been getting your information, someone is lying to you and you're falling for it.