I don’t mean to be pedantic, but that’s a 200% increase, not 300%. You’re also mixing up kW and kWh. kW is power (like horsepower) and kWh is energy (like liters of fuel). Chargers are rated in kW and battery packs are rated in kWh.
Time based billing went up in the US recently, as well. However, prior to the increase, it was a fraction of the cost of energy-based billing. It was so low that they probably were just barely covering the their energy costs, let alone equipment and maintenance costs.
I personally think the increase on time-based billing is a bit too much - the pendulum has swung too far - but part of that might have to do with applying pressure on regulators to allow energy-based billing. This seems to be working, as I see there is a public petition to allow energy-based billing.
This is a good opportunity for apartment and condo dwellers to approach their property management offices to request destination charging for tenants.