THE EFFECT OF MARKETING COOPERATIVES ON COST-REDUCING PROCESS INNOVATION ACTIVITY



Table 2. Subgame Perfect Equilibrium in the Mixed Oligopsony

Pre-innovation

w

4t-12t2ψ+(32t2ψ2-8tψ-3) pC+4tψpI

Stage (Stage 1)

wC(1)

( 4 tψ + 1)(8tψ - 3)

w

t-4t2ψ+(4tψ-3) pC+4tψpI

wI(1)

8 tψ - 3

8tψ[3tψ - 1 + ψ(pc - Pi )]

xC(1)

( 4 tψ + 1)(8tψ - 3)

8t2ψ2+4tψ-3+8tψ2(pI-pC)

xI(1)

(4tψ +1)(8tψ - 3)

Innovation

г*

8t[3tψ - 1 + ψ(pc - Pi )]

Stage (Stage 2)

rC

( 4 tψ +1)(8 tψ - 3)

г*

t(8tψ - 5) + [(8tψ + 3)(Pi - Pc )]

rI

( 4 tψ +1)(8 tψ - 3)

t(32tψ -13) + 3(pi - pc )

rT

( 4 tψ +1)(8 tψ - 3)

Post-innovation

_   8t[3tψ - 1 + ψ(pc - Pi )]

Stage (Stage 3)

wC(3)

Pc         (4tψ +1)(8tψ - 3)

w

-5t +18t2ψ-16t3ψ3+ (16t2ψ2-2tψ-3) pc +2tψ(8tψ-1) pi

I(3)

( 4 tψ +1)(8 tψ - 3)

x

(8tψ + 3)[3tψ - 1 + ψ(pc - Pi )]

xC(3)

( 4 tψ +1)(8 tψ - 3)

ψ[t(8tψ - 5) + (8tψ + 3)(Pi - Pc )]

xI(3)

( 4 tψ + 1)(8tψ - 3)



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