Companies can also install them just by hiring an ordinary commercial electrician (or an industrial electrician for the fast-charge options). They don't need specific govt approval or licences, nor conduct EIS studies, nor do major construction. They can add points to light-poles in your open-air carpark, or run them along walls in a parking structure. Much less infrastructure than bowsers.
You can install an outside (unmetered) 240VAC/20A power-point for maybe $50 parts plus labour. A standard three-phase (400V/30A) box w/- EFTPOS is about $600, plus labour. A DC 30m-fast-charge station w/- EFTPOS is about $3000, plus some back-end costs for the DC. The low cost means a company can add a row of free 240V charging points just for PR, even if they don't get used much; then ramp up to faster charging and paid charging (charged charging?) once they gauge demand or the number of BEVs increases.
There's vastly less commitment required to get started. And the financial return-per-point can be vastly less for it to be worthwhile.