Disagree I think about 12 years from now 50% of all cars sold in the develop world including China and possible India will be BEV. By 2022-2024 BEV's will be cheaper to manufacture than ICE's and almost every person who buys a good BEV doesn't want to ever go back to ICE's as it's so much better. Charging infrastructure will come fast as it's cheap. Next year Tesla will have 2 times the super chargers as now then 2-3 years later they will have again 2 times the infrastructure and not to mention that's just Tesla. There will be lots of other companies installing super charges even in apartment blocks.
The battery production capacity won't be there in 12 years to build 50% of the world's cars as BEVs unless a heck of a lot of people are willing to settle for short range city cars with significantly smaller battery packs than long range BEVs and even then it would be iffy.
To replace 50% of the world's ICE car production with long range BEVs, would require 100 GigaFactory equivalents and cost around $500 billion. Somebody needs to start putting up $42 billion a year for the next 12 years to do that and nobody is putting that kind of money into building battery factories, or even seriously talking about it.
Nobody in the mass market is going to get serious about mass producing BEVs until Tesla proves it can be done and people will buy them. And even then they will spend a couple of years trying to prove it's not really happening. Only when it's clear Tesla is not going away and is in fact the new Google, Amazon, or Apple in the car business will the older companies decide to start developing a mass produced BEV and that will take at least two years, probably longer.
This takes us past 2020 before anyone other than Tesla is even giving serious consideration to needing all those Gigafactories. Companies will run to governments to build Gigafactories for them and many governments will do it because it will be seen as needed to keep their country competitive. But half of your 12 year time line will have passed before that happens.
Even then governments will argue and go back and forth and will delay for a year or more breaking ground on the factories. Then the factories need to be built, which will take a couple of years. By the late 2020s we might have the equivalent of 10 Gigafactories worldwide, probably half of them owned by Tesla. Those factories will be able to provide enough batteries for about 5% of current car production, more than that if people are willing to drive hybrids with small batteries or really short range BEVs.
Without some major incentive like skyrocketing gas prices, the public will probably keep driving their old ICE cars while they wait the year or two for their Tesla to be built. Economists are predicting gas prices are going to remain low for a very long time because demand is dropping while supply is increasing. The CAFE requirements in the US will serve to accelerate this trend as new ICE cars will use less and less gasoline.
Between the math and human nature, BEVs will not become the majority type of car on the road in even one large country until mid-century or later. Battery production is the key. Elon Musk saw that a few years ago which is why the first Gigafactory exists. Without lots of massive factories cranking out massive amounts of batteries, BEVs will remain a novelty item. And with the numbers required, it's going to take a very long time to build the capacity necessary. To a large degree the will to even start isn't there. It's only there in the Tesla universe and nowhere else.