> You haven't linked the photo…

The one at the top of the article.

> They wouldn't, they'd just put more panels on a bigger surface.

Given a specific budget they can only buy so many panels. Free land would change the tradeoffs.

> And again, industrial actors are maximizing the economic output they can make.

Based on current costs. Change the costs and the methods change too.

> Whatever decision you take at your level, it's going to be more expensive than what they are doing, and more efficient.

No. I already have the land and the house. That means most efficient for me is different.

I don't want to waste any more of our time arguing about how to define X so I'll skip the rest.