why do I believe billionaires have pledged, rather than given ?
because they are billionaires
and they wouldnt have a lot of money if they gave it away
also this:
"The French billionaire Bernard Arnault promised on Tuesday to donate €200m (£170m), hours after his longstanding rival François Pinault, announced he was giving €100m.
The Bettencourt family, will contribute €200m, the energy group Total €100m, and the brothers Martin and Olivier Bouygues announced a personal donation of €10m, as did an American couple, Henry and Marie-Josée Kravis
complicated all this .....