Another thought on charger availability, better utilisation:there would still be a need for dual fuel for some years to come until the charging time won't be an issue anymore.
For example, like many businessmen you drive to a meeting somewhere and find the handy charging bay occupied. But being a newer one it has a second parking bay and the charger has two connectors, so you use the second one and go to your meeting.
When the first car stops charging the charge point timer automatically switches to your car. With ultra fast charging that easily looks after both cars quickly, for just the minute cost of an electronic switching circuit in the charge point.
I'm sure that we'll see sophistications like this before too long, if only to cut installation costs.
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