Online Advertising Market Size, Share, and Industry Analysis, By Type (Video Advertising, Native Advertising, Display Advertising, Full-Screen Interstitials, and Others), By Platform (Mobiles, Laptop, Desktops & Tablets, and Others), By Pricing Model (Flat Rate Pricing Model, Cost Per Mille Pricing Model, and Cost Per Click Pricing Model), By Industry (Media & Entertainment, BFSI, Education, Retail & Consumer Goods, IT & Telecom, Healthcare, and Others), and Regional Forecast, 2025-2032