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The problem here is the retail price on things does not really drop.

using a Laptop as an example, prices of Laptops go UP every year, their price / performance ratio may improve...

So in this example if your 300 Mile range battery costs $15,000 today you may be able to get a 600 mile range battery for $15,000 in the future but you will unlikely be able to buy a 300 mile range battery for $8,000

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In inflation-adjusted terms the retail prices of things absolutely do drop.

Sure, Tesla might choose to only sell a 600-mile range battery for $15k instead of the 300-mile range battery for $8k. But if there’s a market for a 300-mile vehicle that costs $7k less, and that vehicle can be profitably produced, then it will very likely exist.

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