F1, being a Formula series, has relatively uniform cars. In most Formula series I've read about, either the car is developed by the teams but held to strict regulations, or it's supplied by a third party such as Dallara with F2 and F3, or Spark with Formula E. I think I had heard that F1 is about displaying upcoming technology, but I think this notion is antithetical to the formula format, where there's a benefit in being uniform. I think that the best fields to display upcoming technology & engineering is in series where the rules aren't as strict, like the LMP1 successor class coming in the next WEC season. How does one use a formula series to display new technologies when the very nature of a formula series is uniformity? I mean yeah, you can have strict regulations while still leaving the wholesale development of the car to the automakers, but I think in the name of both fairness (e.g. the "Formula 1.5" meme) and making it more affordable for prospective teams to enter, I think F1 ought to have their chassises supplied by a third party just as we see with F2, F3, and FE. You can say that it's not traditional, and indeed many automakers have good reason to be proud of the F1 cars they've produced in the past. But tradition and pride doesn't cut paychecks, and at the end of the day, pragmatism & adaption always precedes beauty and tradition, much like how racing stripes and colors (e.g. British Racing Green) were originally for making each car in a race visually distinguishable. We're already seeing literally every automaker make cross-over SUVs, even Ferrari. But if F1 wants to cling to a sinking ship known as tradition, so be it, as traditions are just vestigial memes.