Digital identity is moving from isolated national ID programs to interconnected ecosystems including governments, enterprises, and platforms. Public sector investments in foundational IDs, biometrics, and trust frameworks now intersect with private sector demand for reusable, high-assurance identity in banking, telecom, travel, and digital services. At the same time, wallets, verifiable credentials, consent layers, and interoperability standards are reshaping how identity is issued, shared, and relied upon under increasing regulatory, security, and user experience pressures globally. This analysis helps readers understand where value and responsibility sit across the digital identity stack. It clarifies which vendors anchor identity as platforms, which enable ecosystems through specialist capabilities, and which consume identity as relying parties.