I thought in 2022 we would be further along than this. Am I missing something?
Someone please correct me if I'm wrong, but to my knowledge no DCFC company is profitable (yet).
Tesla made the choice to build Superchargers as a way to sell their cars and Electrify America was created because Volkswagen negotiated their Dieselgate punishment to be Billions of dollars invested in charging infrastructure instead of Billions of dollars in a fine directly to the government.
I don't think it's a coincidence that those two companies seem to have the best networks around here and they aren't concerned with turning a profit at the stations they build.
While Tesla targets Supercharger locations that will encourage people to buy more Teslas, EA and the other DCFC companies want to have a piece of the DCFC market if it turns into something profitable, so they're starting at the locations where they think they'll get revenue in return for their investment.
That has Tesla building stations to solve the roadblocks to EV ownership such as, "I can't drive to Yellowstone" problem even if it means an under-used station whereas EA et. al. are looking for stations where they are more likely to make their investment back: busy locations, or jurisdictions that will subsidize the install costs. Busy locations tend to correspond to higher population density and subsidies are usually going to be found with democratic leanings jurisdictions. If you look at a population map and a political map you can see where Chicago looks quite a bit different than the rest of Illinois in both regards.
As far as Iowa, I guess more people travel I80 than some of the north-south interstates in Illinois? i80 is pretty much the only interstate in Iowa, so if someone were going to put a DCFC station in Iowa they'd probably just put it on i80 by default.
DCFC options should get better as time progresses, but as a fellow midwesterner I am genuinely wondering if they can be a sustainable business model on their own or if charging will need to be subsidized from a nearby "attraction" (hotel/casino/restaurant/township).