Maybe they're building massive cpu farms, why else mention flops? Maybe they haven't heard of ASIC...
Planning massive data centers like this is pointless. No one knows what the bitcoin network will look like next week, let alone by the time these centers are powered up and running. I doubt they will ever see the light of day, let alone be profitable.
You could spend $50 billion on almost anything else, like lottery tickets, and most likely see more return on investment.