I don't think there is such a legal obligation, because videos like this one exist where devs do share the exact financials of their Steam releases: https://www

I don't think there is such a legal obligation, because videos like this one exist where devs do share the exact financials of their Steam releases: https://www.youtube.com/watch?v=mPMfcaUulYU https://www.youtube.com/watch?v=mPMfcaUulYU