Even if you think Fender is solely responsible for the design, which is frankly ridiculous, the bloody thing's been around forever and now they're suing?

Having a court stop actual counterfeits -- sure, nobody has a problem with that. That's not what this is.

Then there was the headstock thing, Fender was notorious for pursuing makers of guitars with headstocks that had any resemblance to the Strat headstock. Let's ignore how limited the design space is considering the constraints of six strings - six tuners at the end of a narrow strip of timber. Fender was obviously acting in an anti-competitive way at that point. At the same time, the quality of their own products continued to drop. Coincidence?

Now they are going after anything that looks like an electric guitar.

The general "S-style" body form, as popularised/iconified by the Stratocaster is popular for many reasons. A lot of those reasons (I would say most) are practical/functional.

Fender shouldn't be allowed to possess the shape, let alone use it as an anti-competitive weapon in order to coast along for another century just because the brand happens to come with some notable IP.

Fender's monopoly over the shape shouldn't be protected by law/courts. Here's why:

It's a functional design -- a matter of ergonomics and practicality. For a lot of guitarists, the S body style is the most effective, comfortable shape to play.

For a concrete example of an "iconic", yet clearly functional design feature: the top point of the "S" is where the front strap hook is. Having this point protrude forwards (along the neck) helps balance the weight and this provides the player with physical control over the mass of the guitar.

Many of the subtle features of Stratocaster body are obvious practical improvements -- it's the result of filing down sharp edges that were noticed when attempting the play the instrument. Imagine you're starting from a classical acoustic design, what steps would you take to make it more playable and make it electric at the same time?

It's an incremental design built on forms that have been used by luthiers for centuries. It's not a Fender shape -- it's an (electric) guitar shape.