Corn oil, canola / rapeseed oil, sunflower oil, etc. are generally not good choices. In fact they originally were used as machine oils (check out the fascinating origins of the Proctor and Gamble company). Olive oil and avocado oil are much better options from an overall health perspective. They do cost more than the seed oils but better health often is less expensive in the long run.

You have a good point. Simply hanging fiber on existing power poles or telephone poles probably would warrant a small annual space rental fee and would be far less. Likely those costs are due to new pole construction, right of way easements, or perhaps the cost of burying the fiber.

Seems like a terrific idea, but the crane looks awful. Maybe as this catches on and improves, more thought can be put into something that is more esthetically pleasing