Quite the opposite. Modern security models (which are to an extent necessary on the hostile Internet) are reserving modular sharing to the elite professional de

Quite the opposite. Modern security models (which are to an extent necessary on the hostile Internet) are reserving modular sharing to the elite professional developer class, and preventing users and aftermarket developers from remixing their systems. Things like Greasemonkey are being smothered and blocked by walled-garden native apps, signatures, and browser lockdowns.