I don't think you understand the comparison. Any native code that runs on your OS can do almost anything, like access your webcam. Code that runs in your browse

I don't think you understand the comparison. Any native code that runs on your OS can do almost anything, like access your webcam. Code that runs in your browser can't do that unless you (the browser) grant the permission, or it finds a series of exploits. If you are suggesting browsers shouldn't offer access to webcams etc at all, that would not make the world more secure because the web would just die and we'd all be back to running native code.