What was last said is correct. Some people are willing to mine at a loss. I have mined for years, from when a gpu was worthy. I don't have a huge setup, but I still mine. Not loosing yet as I exchange monthly energy cost every month.

But that said. I would mine at a loss to an extent. I would also mine at a loss and exchange some till that extent is met. Not because I am seeking to be rich. But Bitcoin is a very useful method. It actually has saved me money with international purchases. It also has in my time made me upset based on how many I sold when it was stunning it hit 50$ , then again at 250$.

Had I just saved all the BTC I sold... but that is not the reason to do it. Despite what some people think. Yes some profit is nice. You are a business when your mining. Your supporting a system. If it covers your cost, so be it, If you make a little, great.

Also while the response is claimed to be BS , it has some true aspect. If one company took over. Or One pool took over. It could lead to a huge fall really fast.