So it would be actually financially _better_ for Valve to donate a portion of their revenue and state "we will donate x% of the price to yy", as THEN it would be tax-deductible for them
It's not better, because being revenue and donated away and tax-deductible all cancels out. It's as if they never saw the money, just like forwarding it.
So it would be actually financially _better_ for Valve to donate a portion of their revenue and state "we will donate x% of the price to yy", as THEN it would be tax-deductible for them