I second everything SageBrush said below.
If this were a mathematical problem, I would agree with you, as well as GRA’s point about PHEVs>BEVs.
It isn’t though, it is a psychological problem. How do you get people to adopt “greener” solutions? When hybrids were the ‘greenest’ car around, they peaked out at about 4% market share. There just aren’t that many people that put CO2 emissions at the top of their priority list.
So, how to advance EVs in general? Appeal to a much broader section of the market. Make the, appealing to those that want POWER, EXCITEMENT, SEXY, great handling, meanwhile practical, convenient (for many), and provides a world class driving experience.
The section of the market that wants that is larger than the market section that wants ‘green’.
If someone else thinks there is a better way, great, go for it. Tesla would be happy to have another company selling more EVs.
SageBrush wrote:What good are small batteries that consumers do not want ?
Look at the sales stats in the USA: People overwhelmingly want Tesla, and a big part of that is larger batteries.
Second, Tesla is supply constrained due to production bottle-necks, not due to raw material limits. I don't think they could make many more cars than they do presently even if the battery size was halved.
Lastly, while it is certainly true that raw material mining and transport are dirty and in some cases miserable activities, each generation of recycled battery using sustainable methods halves their impact.