I think there are different conversations to take into account.
Personally speaking, I could have a charging point installed at my house. I would happily consider an EV, hybrid or ICE as my next car, I suspect that my main consideration would be related cost. But for others, there's a lot more to take into consideration. Taking finances out of the equation, I can see how the switch the an EV (right now) doesn't make sense for everyone.
The other conversation is a little more objective. EV's look like they'll replace ICE over the next X years. Car manafacturers, governments and more will need to have an eye on the next 10,15, 20 years.
Here lies the challenge. Customers tend to make shorter term decisions, whilst the industry will need to produce cars that will sell short term and develop cars/tech that suit the market in the 10+ years from now.
There have been lots of discussions about a step forward being required in EV's to bring down costs, improve infrastructure and/or moving away from a reliance on lithium based batteries.
Could
Mercedes solar paint be that next step?