Reliance makes money the way a river system works: one massive upstream source feeds multiple downstream channels, and the channels have started feeding each other. The upstream source is still Oil-to-Chemicals. Jamnagar processes 1.4 million barrels of crude oil per day — more than most countries consume — and converts it into transportation fuels, polymers, polyester, elastomers, and chemical intermediates. This segment alone generated roughly $6.5 billion in EBITDA during FY2025 on approximately $62.5 billion in revenue. The refinery's edge isn't just size. It's complexity. Jamnagar can process the cheapest, heaviest, most sulfur-laden crude grades that simpler refineries reject, then crack them into high-value products. That spread between cheap inputs and premium outputs is where the real margin lives. When global refining margins are healthy, O2C throws off enormous cash. When they compress — as they did in Q4 FY2026, dragging net profit down 12.5% — the whole group feels it. Channel two: Jio Platforms. This is where the story gets interesting. Jio isn't just a phone company. It's 488 million subscribers paying monthly fees for mobile data, voice, broadband (JioFiber and JioAirFiber), and increasingly for streaming content through JioCinema. Digital Services EBITDA hit $7.6 billion in FY2025 — already larger than O2C's contribution. The business model here is straightforward: charge each subscriber a monthly fee (ARPU was around $2.40 and rising after two tariff hikes in 2024-2025), then layer on additional revenue from enterprise connectivity, cloud services, advertising on JioCinema, and commerce through JioMart. The 488 million number matters because it represents roughly one in three Indians. That's not a customer base. That's infrastructure. Channel three: Reliance Retail. India's largest retailer with 19,000+ stores across grocery (Smart Bazaar, JioMart, Fresh), electronics (Reliance Digital), fashion (Trends, AJIO), and pharmacy (Netmeds). Revenue of approximately $38.9 billion with $2.9 billion in EBITDA. The margins look thin — around 7.4% EBITDA margin — but that's deliberate. Reliance Retail is still in land-grab mode, opening 500+ stores per quarter, building procurement relationships, launching private labels, and using Jio's subscriber data to target customers. The bet is that scale will eventually deliver the same kind of cost advantages that Jamnagar enjoys in refining. Channel four — smaller but growing — is Media and New Energy. Network18 provides news and entertainment content. JioCinema streams IPL cricket (rights cost over $3 billion). New energy investments target solar manufacturing, green hydrogen, and battery storage at the Jamnagar complex. Here's what connects all of this: the channels aren't independent businesses that happen to share a parent company. Jio's 488 million subscribers are the customer acquisition funnel for Retail. Retail's physical stores are distribution points for Jio SIM cards and devices. O2C's cash flow funds the capital expenditure that both consumer businesses require. JioCinema content keeps Jio subscribers engaged and reduces churn. The combined data from telecom usage, retail purchases, and streaming behavior creates targeting intelligence that improves advertising yields across the platform. Consolidated FY2025 numbers: $125.3 billion revenue, $21.6 billion EBITDA, $9.5 billion net income. The 7.6% net margin looks modest until you remember that Reliance is running a refinery, a telecom network, and 19,000 physical stores simultaneously — all capital-intensive businesses where the payoff is control rather than margin percentage. Market cap of approximately $240 billion values the whole system at roughly 11x EBITDA, which implies investors believe the consumer businesses will keep growing faster than the energy business cycles down.