Another angle: or why cars are so incredibly cheap for what they offer. Do keep in mind that car manufacturers make a lot more on the after-sales track than bike manufacturers ever will and some might be willing to reduce the sticker price a bit but raise the price of parts and maintenance to counterbalance that.
I think it's just the difference that car industry is much bigger and much more efficient with its labor. It's also widely different markets so clearly markup is very different. Where automobile markup is often not more than few percent hipster urban ebike market can easily justify 500% markup.
