The average expected benefits of sharing behavior
U i 1 = y ( V i + α Δ V − β C ) + ( 1 − y ) ( V i − β C )
Expected benefits of positive sharing behavior
U i 2 = y ( V i + E i ) + ( 1 − y ) V i
Expected benefits of negative sharing behavior
U ¯ i = x U i 1 + ( 1 − x ) U i 2