Earlier quoted context omitted.
Great idea! Such donations might even be tax-deductible revenue for Valve, so even the finance bros should love it. Although I would prefer if Valve simply commits to a fixed percentage of its Steam fee to be donated...
Forwarded donations are not tax-deductible (in the US); That's a lie that's been spread around the internet. If you give a company money with the express purpose of them forwarding it to someone else (the company acts as a "collection agent"), it's not their income or donation. https://taxpolicycenter.org/taxvox/who-gets-tax-benefit-thos...
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