I guess the retort is that even when such projects fail, they leave behind something material that can be repurposed. If your manufacturing plant fails, the wa

I guess the retort is that even when such projects fail, they leave behind something material that can be repurposed. If your manufacturing plant fails, the warehouse, factory, machinery, etc. are all reusable and last a long time. Heck, so much of the housing in major cities is built out of old factories. If your startup selling virtual pet food for your digital hamster fails, what does it leave behind?