> Setting up the situation where you make more money if your cars charge slower and more often sounds like a dangerous game for an EV manufacturer to play.

You mean like that time that London Heathrow airport ran a trial in which they specified every flight's gate number when passengers checked in, instead of only revealing it shortly (40 mins?) before scheduled departure?

Retail revenues in the terminals dropped, passengers went straight to their gate instead of hanging around the shops.

The idea was quietly dropped.