Netanyahu knows very well that the money will be used to pay PA security forces that are defacto hired thugs to maintain the occupation. Beats having IDF assume all the cost in money and man power. Israel is doing no one any favors by releasing the money, in fact its in their own best interests!
Israeli soldier collapses, dies from heatstroke during visit to Jerusalem's Old City (Haaretz)
from the article: Netanyahu set to hand over $100 million in Palestinian tax money