The startup cost on their charger stations is pretty high and they typically have a deal with land owners to have them installed, so I doubt they hit break even for years on one bank.

They were aggressive in putting up charging areas to ease the hurdle of charging for potential customers when they were the only viable BEV and sales have slumped pretty badly now, so spending more on chargers at this point is financially unwise. With charger competition ramping up they are not in a great place for the financial aggression needed to have the chargers pay off in any timespan with limited income from car sales.

If they had been of the mindset to corner the charging market, instead of driving sales of their vehicles, they would have had an entirely different strategy and could have had a great steady income off chargers.