Ağ Dışsallıkları: Türkiye Mobil İletişim Piyasası İçin Ampirik Bir Analiz

Öz

Bu çalışmada Türkiye Mobil Telekomünikasyon Piyasası’ndaki ağ dışsallıklarının varlığı ve etkileri analiz edilmektedir. Ampirik analizde piyasa talebini ve piyasa fiyatını dikkate alan dört farklı model Türkiye’deki mobil operatörlere ait 2005q1-2019q1 dönemleri arasındaki panel veriler kullanılarak dinamik ortak korelasyonlu etkiler (DCCE) tahmincisi yardımıyla tahmin edilmiştir. Elde edilen sonuçlar talep ve fiyatların belirlenmesinde ağ dışsallıklarının etkili olduğunu göstermektedir. Sonuçlara göre geçmiş dönemdeki ağa katılma talebinde %1’lik bir artış mevcut dönemdeki ağa katılma talebini yaklaşık %0.3 artırırken, piyasa fiyatını yaklaşık %2 artırmaktadır. Geçmiş dönemdeki ağı kullanma talebinde meydana gelecek %1’lik bir artış mevcut dönemdeki ağı kullanma talebini %0.7 artırırken piyasa fiyatını yaklaşık %1.1 artırmaktadır. Ayrıca geçmiş dönemdeki piyasa yoğunlaşmasında meydana gelecek %1’lik bir artışın mobil iletişim talebini %0.1 ile %0.7 arasında, piyasa fiyatını ise  %2.5 ile %3 arasında artıracağı tespit edilmiştir.

Anahtar Kelimeler

• Ağ Dışsallıkları,Mobil Telekomünikasyon Piyasası,Mobil İletişim Talebi,DCCE Tahmincisi

Network Externalities: An Empirical Analysis For The Turkish Mobile Communications Market

Öz

In this study, the existence and effects of network externalities in Turkish Mobile Telecommunications Market is analyzed. In empirical analysis, four different models, both taking market demand and market price into account, were estimated using panel data from the 2005q1-2019q1 periods of mobile operators in Turkey with the help of dynamic common correlated effects (DCCE) estimator. The results show that network externalities are effective in determining demand and prices. According to the results, a 1% increase in the demand for joining the network in the past period increases the demand for joining the network in the current period by about 0.3%, while increases the market price by about 2%. A 1% increase in the demand to use the network in the past period increases the demand to use the network in the current period by 0.7%, increases the market price by about 1.1%. Furthermore, it was determined that a 1% increase in market concentration in the past period would increase the demand for mobile communication between 0.1% and 0.7% and increase the market price between 2.5% and 3%.

Anahtar Kelimeler

• Network Externalities,Mobile Telecommunications Market,Demand For Mobile Communications,DCCE Estimator

Kaynakça

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