Because when LCD appeared it was inferior in many respects to CRT. It was a long time before LCD screens offered the flexibility, refresh rates, contrast and response times of a high end CRT. But, eventually, the technology got there and consequently CRT's vanished.
Of course its not quite the same with cars because for quite a lot of people there are little to no downsides of ICE cars and therefore the perceived benefits of moving to EV are smaller. Whereas nobody could deny the size of a 19" CRT wasn't absolutely ridiculous on your desk
I think EV's are really interesting and when it's sensible to do so (ie not when I'm 2 years in after ordering it brand new) I'd love to replace our Mini Cooper with a Mini Electric. It'll be cool to have an EV, it's fun tech and it'll be nice to buzz around town with zero sound. But I'm not going to go full fanboy and pretend that the EV is and always will be the answer to everyones motoring requirements. For many people, being able to spend 90 seconds putting 70 litres of liquid in a car that gives you 700 miles of range is something that is very valuable.
Of course the other thing I like about the Mini Electric is that it is in every respects a conventional car - it looks and feels like any other Mini.
For me the tipping point will likely be when there is a decent credible EV option in a range of regular cars. Even BMW don't quite get it - the electric models need to just look the same as everything else. Where is the fully EV E Class and 5 Series? Why must it always be standalone models that look weird?