"industry standard". What standard? You mean the federal vehicle standard, which didn't require cars to have immobilizers?

Or do you mean that because Hyundai/Kia didn't do what other companies do, that the government has the right to fine them? If yes, then what is the federal standard for?

Industry standard means used widely across the industry, I would like to note that Hyundai and Kia are the largest Korean automotive makers. In the NA market, Hyundai is positioned #5 with 10% market share. In Korea, Kia and Hyundai combined have ~79% of the market. So to frame it as "they are not using industry standard" is wrong as at least 10% of the NA market and ~80% of the Korean market does not use this technology.

So in the past, the most stolen make of car was the Honda Accord.

Apparently Honda should have taken note and aggressively pushed new anti-theft technology.

You are looking for a technological solution to a societal problem.

Buyer beware? To argue on behalf of the Koreans, the cars didn't come with immobilizers, which is perfectly legal in the US, whereas in the EU it's a requirement. Maybe Baltimore should be suing whichever agency it is that permits that.

I wonder if an analogy can be made with airbags, of course airbags are well-advertised and sane buyers would avoid cars without them, how about seat-belt pretensioners instead?