OpenClaw is an exception to your list. It’s easy to spin up an OpenClaw alternative (you can even fork it), but not clear how to significantly improve its function. You may argue that name recognition (what OpenClaw relies on today) is separate from brand; but if a competitor becomes popular (perhaps by offering slightly better security), unless OpenClaw can make a significant functional improvement (like better OpenAI integration, since OpenAI hired its creator), the only way I can imagine it regaining market is via brand.