Because TAXES DESTROY.
That idea was covered already, in first grade.
Head to the back of the class.
Income? are they destroying income (don't answer, rhetorical question!)
Commerce? (sales tax)
Productivity? (VAT taxes adding value at every level in the supply chain)
The power to tax IS the power to destroy, better that it fall equally on everyone, that no one, no person or organization can be targeted if all bear the burden equally.