A shutdown is the public endpoint, not the first signal. The useful check starts earlier: launch clarity, adoption, retention, partner base, switching reason, trust, and unit economics.
The first test is habit. Did the product become the default route for a real job, or did it remain a trial people could admire and abandon?
The second test is ecosystem. A platform needs creators, developers, sellers, suppliers, studios, operators, or partners to make the route worth returning to.
The third test is parent-brand exposure. Some shutdowns barely touch the parent because customers never attached the product to the core promise. Others damage judgment because the product sat close to the parent brand's authority.
A STOP verdict is appropriate when the company keeps marketing launch attention while repeat behavior, partner investment, or trust signals are already weak.
The repair is to name the failed layer. Product clarity, retention, ecosystem, economics, trust, and parent-brand damage require different decisions.