That would still have been an interesting way to explore these questions. Royalty does not exist in a vacuum, it is a product of many principles that Sheeta and Pazy would not be fan of (not even Muska I bet).

That's true. Could certainly be interesting, I mean, they build the whole thing and probably spend a few generations there.

But thing is, Miyazaki is very anti-tech. He did not want Laputa to be a dream followed by solarpunk, it was supposed to be a cautionary tale about the fall of technological societies. It prefered to focus on the destructive powers rather than on the post-labor utopias that the Laputa robots could have brought.

I would call his relationship with tech ambivalent, because the tech of Laputa is primarily positive and exists in harmony with nature. It just falls into the wrong hands.