From the article:
(1) Rent for $0.20-1.20/mo - or -
(2) Sell for $20-24
Sell/rent ratio is 17-120 months. These numbers seem very different than for real estate. It's as if the cost to rent a $1M property could be as high as $60k/mo. Not really sure what to think of it, perhaps the comparison is too simplistic.