When will people learn not to trust "concept cars"? Seriously. Concept cars don't have to face any of the real issues that actual production vehicles do, so that they can make them look like works of art.
And that's all that they are, and will ever be. Actual production vehicles, however, are constrained by the laws of physics, the laws of the countries the manufacturer wants to sell in, production limitations, and economics.
As a general rule: the more "radical" the styling looks, the more its aero drag will be (unless it's "radical" in terms of looking like an airplane wing and/or fuselage, with a minimum of "design flourishes", minimum of wheel exposure, etc). Teslas are about as streamlined as you can actually get while still looking like a "car"; beyond that you have to start going to Aptera-level extremes for further improvement. The more its aero drag is (aka, the worse it is than a Tesla), the worse its range will be for a given pack size (aka, a given price). And the smaller the EV components' scale of mass production, the worse of a buy they'll get on a given power output and energy capacity in their EV components. The scale in turn comes from the amount of money put into investment, which for most manufacturers is far, far less than Tesla has put in.
In short, pretty much everyone else starts out at a price/range disadvantage to Tesla (less money invested), and the more they go for "conventional" or even "artistic" styling, the worse it gets for them.