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Ekonomi Manajerial dalam Perekonomian Global Bab 9: Ol ig op ol i dan Ar si tekt ur  Perusahaan

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Ekonomi Manajerial

dalam Perekonomian GlobalBab 9:

Oligopoli dan Arsitektur Perusahaan

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Pokok

Bahasan•

••

Oligopoli dan Konsentrasi Pasar

Model Oligopoli

Implikasi Efisiensi OligopoliModel

Maksimisasi Penjualan

PerkembanganOligopoli Internasional

Arsitektur

Perusahaan Ideal

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Oligopoli

Sedikit Penjual

Persaingan BukanHarga

Penghalang untuk

Masuk

uopoli ! ua

Penjual

Oligopoli Murni !

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Sumber-SumberOligopoli•

Skala Ekonomi

ibutuhkan In#estasiModal Besar

Proses Produksi $g

ipatenkan

%oyalitas Merk

Mengendalikan Bahan Baku

&o#ernment fran'hise

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Pengukuran

Oligopoli

Rasio Konsentrasi

 – () *) or +, Perusahaan "erbesar -Kasus

Herfindahl Index (H)

./,0

 – H 1 2umlah Kuadrat Pangsa Pasar dari

SEM3A

Perusahaan yang ada di Industri

heor! of "ontestable#arkets

 – 2ika masuk pasar adalah bebas dankeluar pasar tanpa biaya kemudian

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#odel

"ournot•

•igagas oleh Augustin 4ournot

Asumsi "ingkahlaku

 – Perusahaan memaksimumkankeuntungan diba5ah asumsi bah5apesaing mereka tidak merubahtingkat produksi6

Model Bertrand

aka

n•

 – Perusahaan berasumsi bah5a pesaing

mereka

tidak akan merubah harga6

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Model 4ournot

•"onto

h –

 –

 –

 –

Hanya ada dua perusahaan

-duopoly0

Produknya Identik

Biaya Marjinal 1 7

Mula/mula Perusahaan Amempunyai

kekuata

nmonopoli) kemudian Perusahaan B

memasuki

pasar6

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Model 4ournot

Proses Adjustment•

 –Masuknya Perusahaan B mengurangi

permintaan terhadap produk

Perusahaan

Perusahaan A berekasi dengan'ara mengurangi output) yang

meningkatkan permintaanterhadap produk Perusahaanyang menurunkan permintaanterhadap produk Perusahaan A6

A –

B)

 –Perusahaan A selanjutnya mengurangi

output

lbh lanjut6

 –

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Model 4ournot

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Model 4ournot

Keseimbangan

 – Perusahaan

memaksimumkan

keuntungan se'ara

simultan6 – Pasar dibagi se'ara merata

diantara perusahaan6

 – Harga di atas harga

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Model Kur#a Permintaan

Patah

igagas oleh Paul S5ee8y

 2ika satu perusahaan oligopolimenaikkan harga) perusahaan laintidak akan mengikutinya) olehkarenanya kur#a permintaan elastik6

 2ika satu perusahaan oligopolimenurunkan harga) perusahaan lainakan mengikutinya) sehingga kur#a

permintaan tidak elastik6

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Model Kur#a Permintaan

Patah

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4artel

s• 4ollusion

 – 4ooperation among ;rms torestri't 'ompetition in order to

in'rease pro;ts

Market/Sharing 4artel

 – 4ollusion to di#ide up markets

4entrali8ed 4artel – <ormal agreement amongmember ;rms

a monopoly pri'e and restri't output

to

set

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4entrali8ed

4artel

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Pri'e

%eadership•

•Impli'it 4ollusion

Pri'e %eader -Barometri'

<irm0 – %argest) dominant) or lo5est

'ost ;rm industry

in the

 – emand 'ur#e is de;ned as the

market

demand 'ur#e less supply by the

follo5ers

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Pri'e

%eadership

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Ef;'ien'y of Oligopoly

Pri'e is usually greater thenlong/run a#erage 'ost -%A40

=uantity produ'ed usuallydoes 'orrespond to minimum%A4

Pri'e is usually greater thanlong/run

marginal 'ost

-%M40

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Sales Ma?imi8ation

Model•

•Proposed by >illiam Baumol

Managers seek to ma?imi8e

sales) after ensuring that anade@uate rate of return has beenearned) rather than to ma?imi8e

pro;tsSales -or total re#enue) ":0 5illbe at a ma?imum 5hen the ;rmprodu'es a @uantity that setsmar inal re#enue e ual to 8ero

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Sale

s

Ma?imi8atio

n

Model

MR = 0

where

Q = 50

MR = MC

where

Q = 40

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&lobal

Oligopolists•Impetus to5ard globali8ation

 –Ad#an'es intele'ommuni'ationstransportation

 – &lobali8ation of tastes

and

 – :edu'tion of barriers to

international

trade

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Ar'hite'ture of the Ideal

<irm

4ore 4ompeten'ies

Outsour'ing of on/

4ore

%earning

Organi8ation

Ef;'ient and

<le?ibile

 "ask

s

Integrates Physi'al

and

:eal/"ime

irtual

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E?tending the <irm

irtual 4orporation

 – "emporary net5ork of independent

'ompanies 5orking together toe?ploit a business opportunity

:elationship Enterprise

 –

 –

 –

Strategi' allian'es

4omplementary 'apabilities andresour'es

Stable longer/term relationships