So I suppose the "tipping point" is when EVs have every conceivable advantage over ICEs and no disadvantages, so you'd have to be a fool not to own one, and even then it'll take a while for people to start buying them.
What they have now:
-Fueling a fraction of the cost
-No exhaust, no noise, no vibrations
-Instant torque/acceleration
-One pedal driving
-Significantly lower maintenance costs and complexity
-Significantly higher reliability
-Can drive itself
What still needs to happen:
-Must have more range for one trip than anyone would want to drive for one trip
-Must take no longer to "fill up", 20 minutes is too long for what's usually a weeks' driving for most people
-Must cost the same or less as an ICE vehicle which is otherwise inferior
I'd point out that not everyone is sold on one pedal driving (I am), "driving itself" is a bit of an exaggeration for the state of ADAS vs. level 5 autonomy and most of the EV models for sale right now don't have ADAS, and lots of ICE car models do and then on reliability, the jury is still out on this one. For reliability common sense would say that "battery+motor" must be more relliable than "gas+filters+oil+filters+serpentine belt+injectors+air intake+everything else in a gas car". But Consumer Reports has dinged both Tesla and Nissan's Leaf for reliability problems. The recommended avoiding the 2013 Leaf due to low reliability, only gave the 2014/2015 Leaf "above average" on reliability and took away Tesla Model's recommendation due to reliability.
So, yes, I think the tipping point for most consumers is when EV's have very few disadvantages over gasoline cars. I'm kind of surprised that you disagree.
Look, I love EV's... but I often talk to people who don't know much about them and it's amazing how little people understand them. Even the cost of fueling isn't something that the average consumer is going to be aware of. If you hang out on reddit.com/r/teslamotors there are questions every couple of days where people say "I want to buy a Model S but I don't understand how much it will cost me to charge it where I live" and this is despite a really slick calculator on Tesla's website.
-Must have more range for one trip than anyone would want to drive for one trip
Most of my trips are something like 10 miles and I don't want an EV with a ten mile range... Unless you want to own two cars, you want the EV to be able to replace the ICE. I want to be able to drive to an airport 100 miles away and leave it for a week in the Colorado cold and then drive it back home and not have it dead. I want to be able to take it skiing which is a ~250 miles round day trip. I want to able to drive for a long weekend to see my sister in it and she's 600 miles away and I want it to recharge in quickly when I need to stop >3 times along the way... I don't think any of these things are totally unreasonable, and my Model 3 which should be delivered to me in the next 100 days can do all of them.
-Must take no longer to "fill up", 20 minutes is too long for what's usually a weeks' driving for most people
What do you think is an acceptable amount of time to wait for an EV to recharge on a road trip? I just drove from Colorado to Salt Lake City a few weeks ago in my ~500 mile range Prius and had to stop for gas once on the way there... how long do you think is a reasonable amount of time to ask people to wait on the side of I-80 to recharge? In any current EV, you'd need to stop >3 times. How long do you think is reasonable to ask people to wait? I think 20 minutes is on the edge of too long, and to convince most ICE drivers you would reasonably want it to be less than 10 minutes.
-Must cost the same or less as an ICE vehicle which is otherwise inferior
Yes, I really think they need to cost roughly the same - or at least the cost differential needs be pretty close. I mean a base 2016 Leaf is a ~$30000 car, but if you look at the inside of it, it's like a Nissan Juke which is in the low 20's. I'm not sure what to compare a Bolt too... but for $36,000 you'd get a heck of a nice ICE car. The Telsa Model 3 starts to bring the comparison closer, in my mind, at least on the base model... but $35k still seems like a lot of money for a car that will have manually adjustable non-heated seats in the base model.
The thing is progress is being made on all of these. The range is at ~250 miles right now for most upcoming models - which is well on the way to good enough - and several upcoming models of EV's - like the Mission E - are talking about 400 miles. Tesla is talking about a >350kW charger - which is 3-5x faster than current chargers and would several hundred miles of range in less than 15 minutes, and Volkswagen and Porsche have plans that are similar in terms out output. And prices are failing rapidly even given the larger battery packs. Everything I personally think is needed is in progress. And when these pieces come together and there isn't much of a sacrifice needed to get an EV and there's lots of good things (like your list), then I'm sure the tipping point will be here.