The point is, there are many companies involved in the production and distribution of goods, and we cannot pretend that a small company exists in isolation. It would be nearly impossible for NO company in the supply chain to experience higher taxes. This includes petroleum companies that provide the fuel trucking companies use for their trucks, companies that provide the steel used to make the tools and office furniture other companies use, and on and on. No, I claim it is virtually impossible for companies to be completely unaffected by higher corporate taxes.
As I've shown, it doesn't matter that corporate tax increases only apply to certain corporations, their impact will be felt across the entire economy.