This doesn’t sound like a subscription, so much as consumption based billing. They make their money back by cornering the building-level market (perhaps landlords can put in competing chargers?) and charging a higher charging fee… okay that’s confusing. Charging a higher “fillup” fee.
I’ve heard the early Internet age referred to as the future dark ages. When all the work, information and content is digitized, it’s prone to being lost to history forever.