There is no doubt that if the rules were just thrown out that limit the performance of the cars, they would be beyond what a human can endure, and be approaching simply insane speeds. Full active suspension, traction control, ABS braking, and the rest would make a crazy fast car and kill a lot of drivers. So the rules dial back the performance a lot. Look at what Porsche did with the 919 car built for endurance, remove the restraints and they have times at Nurburgring unlikely to be broken.

https://www.motor1.com/news/250630/porsche-919-nurburgring-time/

What makes you think that we don't design the engine and the rest of the car systems to cope with max sustained output? If you want to try it yourself, AMG will sell you one in a road car soon.

Monza is driven at full throttle for 75% of the lap, and Baku not much less than that.

That had nothing to do with the cars. It was a screwup on the part of Michelin, who didn't do a good kob of designing the tires needed, after changes were made at the track. Bridgestone had no such problems.

That occasionally happens at other tracks, in other racing series. It's down to the tire manufacturer and has nothing to to with the cars (or bikes), or the teams.

It's like comparing pool and snooker. They're kind of the same, yet they're different.

Why not enjoy both?

I think it was Stefan Johansson (AKA in Indycar: Steve Johnson) who stated that the cost of design-engineering-development-production of the brake system alone in an F1 car exceeds the total cost of an Indycar. This is but one of the ridiculous costs in F1 according to Steve and one that could easily be standardized across the entire field for many millions in savings with no detriment to the show.

Then I stand corrected. I still remember those Buick Wildcat V6 motors that we're always so racy on Pole Day, yet two weeks later they never seemed to have the longevity to be there at the end of the race.

You guys should test your car at Indy, and show how you can run with the spec cars, even with your tremendous downforce (dis)advantage. The IndyCars may have a slight advantage in straightline speed (do F1 cars hit 240+ mph?), but I'd imagine they'd corner significantly faster. Would be interesting to compare laptimes between the two disciplines. It would be a race everyone would want to see. Refuelling for 500 miles would complicate the comparison, though.