Going by the take of people using the internal combustion engine cars, I think most people that are not open to new technology and innovation will want to stick to what they have known all their lives and not change course.
The reason is because, they don't want to learn new 'tricks at old age'. However, there exists a set of people who are crazy about technology and wants to try out the new technology. There will be a challenge in trying to entirely change the system to Electrically driven cars until/except the government steps in with sanctions, which is what the Europian Parliament has done. However, I do not see the posibility of it being global until certain infrastructural challenges are addressed, especially in places where power generation isn't sufficiently produced.
You made a very good point about habits. People of the older generation have a unique way of thinking and a fear of the new. From a personal example: a couple of years ago I suggested to my father (80+ years old) that he replace his car with an internal combustion engine with an electric car like the Nissan Leaf - for driving around the city, and his needs are sufficient with a huge margin, plus comfort and safety. The answer stunned me - “I won’t drive it, I don’t know how to fix it”

I tried to explain that it is much more reliable, plus you don’t have to fix it yourself - there are service companies - not at all! “I don’t know how it works, how I’ll drive it, and where’s the clutch pedal anyway!?”

)) Therefore, I agree with this - there will still be a layer of people with a similar mindset who will operate “their favorite gasoline car” until their “last breath”, but will not switch to the new technology...
PS But I’ll add - at the age of 70 he became interested in a computer, I gave it to him - and he MASTERED it and uses it constantly for his needs. It turns out that when you want and are interested, there are no fears of something new
