İDEALDEN GERÇEĞE DÖNÜŞEN PİYASA: E-TİCARET PLATFORMLARI ÖZELİNDE TAM REKABET PİYASASININ DEĞERLENDİRİLMESİ (FROM PERFECT TO REAL MARKET: EVALUATION OF FULL COMPETITION SPECIFIC TO ELECTRONIC COMMERCE PLATFORMS) - Ergin UZGÖREN -Ergin UZGÖREN | The Journal of Social Sciences