预测
預測
예측
Forecasting
2009年
6期
37~42
,共null页
纵向差异化 市场覆盖 网络外部性 博弈均衡
縱嚮差異化 市場覆蓋 網絡外部性 博弈均衡
종향차이화 시장복개 망락외부성 박혁균형
vertical differentiation ; market coverage ; network externality ; game equilibrium
在具有网络外部性的产品纵向差异化模型中,研究双寡头垄断企业在市场未完全覆盖或完全覆盖情况下的Bertrand价格竞争策略。研究表明:在市场完全覆盖情况下,两产品的市场价格、份额和利润都大于市场未完全覆盖下的市场价格、份额和利润;两产品的质量水平差异程度小于市场未完全覆盖情况下的质量水平差异程度。无论哪种市场覆盖情况,高质量产品都获得市场优势;当具有网络外部性时,高质量产品的均衡市场价格,份额和利润都大于不考虑网络外部性时的市场价格、份额和利润,且随网络外部性系数的增大而增大,而低质量产品却正好相反。
在具有網絡外部性的產品縱嚮差異化模型中,研究雙寡頭壟斷企業在市場未完全覆蓋或完全覆蓋情況下的Bertrand價格競爭策略。研究錶明:在市場完全覆蓋情況下,兩產品的市場價格、份額和利潤都大于市場未完全覆蓋下的市場價格、份額和利潤;兩產品的質量水平差異程度小于市場未完全覆蓋情況下的質量水平差異程度。無論哪種市場覆蓋情況,高質量產品都穫得市場優勢;噹具有網絡外部性時,高質量產品的均衡市場價格,份額和利潤都大于不攷慮網絡外部性時的市場價格、份額和利潤,且隨網絡外部性繫數的增大而增大,而低質量產品卻正好相反。
재구유망락외부성적산품종향차이화모형중,연구쌍과두롱단기업재시장미완전복개혹완전복개정황하적Bertrand개격경쟁책략。연구표명:재시장완전복개정황하,량산품적시장개격、빈액화리윤도대우시장미완전복개하적시장개격、빈액화리윤;량산품적질량수평차이정도소우시장미완전복개정황하적질량수평차이정도。무론나충시장복개정황,고질양산품도획득시장우세;당구유망락외부성시,고질양산품적균형시장개격,빈액화리윤도대우불고필망락외부성시적시장개격、빈액화리윤,차수망락외부성계수적증대이증대,이저질양산품각정호상반。
In vertical differentiation model with network externality, Bertrand price competitive strategies of duopoly firms are researched under incomplete covering or complete covering market. According to the results, market price, share and profit of both product under complete covering market are greater than that of under incomplete covering market; but quality differentiation degree of product is less than that of under incomplete covering market; Product with high quality obtains market dominant no matter which market coverage; market price, share and profit of high quality product with network externality are greater than that of without network externality, and increase with network externality parameter increasing, but all case are reverse for low quality product.