On web engines, web content, and web rent. either the web browser is not a tool acting on behalf of a user, or that being shown (relevant) ads is the user's interest when browsing the web. 300 MB binaries, containing a full browser implementation with little change to supported Web APIs, even though most are not getting used by the app, are shipped together with web apps that have bindings to smaller pieces of native code, to be run locally, instead of actual platform native apps.