You're the one who is in denial of fundamental market economics.
In a competitive marketplace, price is determined by supply and demand.
Companies are totally incapable of "imbedding" anything into their price to "pass along" to the customer.
Sometimes they earn a profit, sometimes they don't.
When they do earn a profit, the government confiscates a portion of it as a tax, AFTER the sale has already taken place. There is no way the company could know what their tax obligation would be beforehand because market pricing does not guarantee a profit will be made.
It isn't rocket science, but it sure is a mystery to you marxists.