Knowing that you can get a replacement battery for an ten year old car without having to payout as much as you paid for the car will also help.
That's not how its going to work. Batteries are cells so can be replaced individually. You don't need to replace the whole engine on an ICE car every 8-10 years just components of it. Besides over those 10 years the general servicing costs and maintenance should theoretically be significantly cheaper because there are so many less points of failure. It doesn't have all those cogs, belts, plugs, oil, filters etc that need constant monitoring and changing.
I just paid £600+ for the annual service (yeah I know main dealer service / not my money don't care etc) and that car is 4 years old and there was nothing wrong with it apart from new brake pads.
How EV's are going to be serviced in the future is an interesting question because most people seem to think that beyond the brakes and a battery health check they don't really need much servicing. I think the industry will find a way to keep extracting money from us all somehow though.
I appreciate I'm sounding like an evangelist but I don't see it that way. Its more a case of embracing the inevitable rather than pushing back on something that is only travelling in one direction.
The various 2030-2040 bans on new ICE vehicle sales is the best thing on this score.
All the mass manufacturers will have EVs in the same price ranges around this time as ICE vehicles because this is the price the market will bear. Even if they have to lower their margins to get there, that is more profit than none at all by failing to supply that sector of the market.
Second hand sales will follow in time and really only time can bring EVs to the second hand market. There is also trust to be gained regarding battery life or replacement cost of course.
The EV manufacturers themselves are saying they expect to reach price parity with ICE cars in 5 or 6 years. The best way we can make the second half market more affordable is to get as many new EV's into circulation as possible. This is why incentives are so important because if the last 25 years should have taught us anything its that for us humans environmental benefits alone are not enough to convince us to make major lifestyle changes.
In general I do think a lot of the barriers are perceived rather than actual. There is a list of them on this thread and a lot of them are simply not true but the perception is there partly due to the way the press present them but partly due to everyday resistance to change. A few months back I was also parroting similar lines and it was only when I actually started to do some proper in depth research that I realised how wrong I was. I have no doubt that when jet engines first came in there were people saying
a plane should have propellers goddammit.
It was only a few years ago (4 or 5 maybe) that the choice in EV's was tiny and the range on most was below a 100 miles. There was also very little in the way of public charging infrastructure. When you see how much has changed since then in such a short period of time its clear that something big is happening and landscape will again look very different in just a few more years.
The last point I'll make is that I don't think we can see EV's as an environmentally friendly option. They are not. Regardless of how you power them private cars are not environmentally friendly. We are dealing with degrees of bad and in that regard they are less bad than ICE cars. They are part of the solution which also needs a significant reduction in private cars. As shitty as that is, its the way it is.