This is incorrect. The DRM may be shipped with the browser or whatnot, but it's fundamentally a plugin architecture. The Widevine plugin, for example, is the CD

This is incorrect. The DRM may be shipped with the browser or whatnot, but it's fundamentally a plugin architecture. The Widevine plugin, for example, is the CDM plugin used by both Google Play and Netflix to provide DRM-protected video on Android and ChromeOS.