This isn't anyone playing anything. This is a story about how people bought $19 billion worth of games and then never played them (which would suggest they likely never downloaded them either). Valve made over $6 billion and used no more resources than serving up the store page and the payment processing.
and this is why Valve is in no rush to pump out games like they used to. Why they have no real burning desire to continue half life. They made enough money to keep the lights on indefinitely by doing no more than simply letting an automatic process run that any first year web developer could set up.