@oscillator yeah that’s a thing I don’t get. How are the cars different from one another in F1? I remember somebody saying Hamilton catching Schumacher was nothing since his car was so good. Wouldn’t Schumacher’s have been as well? I remember there being some tire thing with him. Or are things just worse now?
Since I don't follow F1, I don't know many behind-the-scenes details, but here are some quick search results:
"Since 1981, it has been a requirement that each competitor must have the exclusive rights to the use of certain key parts of their car – in 2018, these parts were the survival cell, the front impact structure, the roll structures and bodywork."
"On top of what was mentioned before, Mercedes/Ferrari engine is designed together with the chassis. Customer teams have to build the chassis around what is given to them."
"the main advantage of being a works team is the luxury of having the engine and drivetrain tailored for your chassis in terms of packaging, and of course streamlining work flow in that engineers will know where things need to be"
IndyCar has none of this going on. Teams have one chassis and aerokit made by Dallara, and can use either a Chevrolet or Honda engine that are very similar. There are plenty of configurable things on the cars, but teams are on a pretty even footing on the tech side. The differences that money get you are being able to pay for better drivers/mechanics/strategists, as well as better facilities/more time to prepare.