The 1st-gear in our cars is already such a stump-puller you can barely blink before hitting the rev-limiter...

The Ford GT can go 0-60 without leaving 1st-gear, for a bit of context...

It all comes down to how much torque the engine makes, where it makes the power, and across what kind of range, and then you need a clutch that'll hold it..

Our Porsches are relatively tame on torque, and rev high, so the short 1-2 gearing works to its advantage..

Making first even steeper would likely be counterproductive, exceeding the engines ability to spin-up..

Just postulating..