Why? AI has limited lifespan too. 1. Computing machinery is made of physical matter, which means it degrades. 2. The large scale economy required to support,

Why? AI has limited lifespan too. 1. Computing machinery is made of physical matter, which means it degrades. 2. The large scale economy required to support, repair and upgrade it also requires many input materials. 3. Those materials are exhaustable and finite, which means, the AI will eventually exhaust its supply of "stuff". If that happens before it's able to expand into new areas, then it dies.