Global Capsule Coffee Market Size, Share & Demand Report By Product Type (Single-Serve Coffee Capsules, Multi-Serve Coffee Capsules, Specialty Beverage Capsules), By Coffee Type (Arabica-Based Capsules, Robusta-Based Capsules, Blended Coffee Capsules, Specialty/Premium Capsules), By Capsule Material (Plastic, Aluminum, Compostable/Biodegradable, Paper-Based), By Compatibility (Proprietary Systems, Open Systems), By Distribution Channel (Supermarkets & Hypermarkets, Convenience Stores, Online Retail, Specialty Stores, Direct-to-Consumer), By End-Use (Household, Commercial) By Region & Segment Forecasts, 2026–2031