He could have kept out of politics and tried to capture both markets. Little fast cars for blue people, big ugly cars for red people. That's now totally impossible. It's one or the other.
Now let's look at the number of voters
Red counties tend to have smaller populations, but there are more of them. Those factors balance out to each of the groups having roughly 50% of the total voting population (contributing to close elections). If we assume the proportion of non-voters is the same in both groups, then the blue counties are over twice as economically productive per capita, which shouldn't be surprising given that the red counties tend to be rural and agrarian.
I'm not sure the turnout assumption holds, but I'm also not sure which way has lower voter turnout. This 2016 map of voter turnout by county (https://abag.ca.gov/sites/default/files/maps/motm_10_18_18_L...) suggests urban areas (e.g. bay area, NoVA, new england) have higher voter turnouts than rural areas, so the per capita numbers may be even more sharply skewed towards blue counties.