BWAHAHAHAHAH!
You can claim income taxes are pumpkin seeds too! It doesn't matter what you call income taxes, they are considered when pricing - and must be paid before determining net return. The only indefinite income stream with which expenses may be paid is sales revenues. Anticipated income tax costs, payroll tax costs, tax compliance costs, and every expense a business has are considered in pricing - even office supplies expense- even though you don't know the annual total until after the year is over- business still plans to pay them!
Prices are determined by supply and demand not by income taxes.