To be fair there is nothing in the shape that makes it sound better than other guitars; so it is not like those modem chip makers or video codec developers that patent the only optimal way to achieve the goal and prevent anybody from competing. Fender does not prevent anyone from making a better guitar. So I do not like copying. It would be better if everyone used their own unique shape rather than something from 50s.

The argument has nothing to do with the sound. A strat style guitar is characterized by:

- Flat top

- Solid body, typically softer/lighter woods

- Bolt-on neck (as opposed to set or through-body)

- Double cutout (as opposed to single/no cutout, V, or other irregular shaped necks) with a longer cutout on top compared to the bottom

- Carved cavity in the top of the body

- "Loaded" pickguard (electronics mounted to it, instead of the body)

- Straight jack mounted into the pickguard

- "Tummy tuck" carved in the back

- Fat/flat shaped bottom of the body like a tele, as opposed to rounded like an LP.

All of these are functional properties of the guitar that have tradeoffs and benefits compared to other designs.

You can have two strats sound completely different but look identical to the untrained eye and the reason for preferring the style has a lot to do with the weight of the instrument and how that weight is distributed when playing standing, and how the body fits in your hands/arms and against your body. There's an argument to be made that the strat is near optimal for comfort in playing.

If you look at competing designs that (PRS McCarty, Ibanez, Schecter, Gretsch - basically anyone) the specific curves may be different but they all look like a Strat because it's genuinely hard to design a different body that feels the same.

The St Vincent signature is one style that I think needs to get more popular but it's not for everyone.