Earlier quoted context omitted.
It seems more likely that at certain times elites have found they have more in common with each other than the lower classes even across religious or ethnic boundaries. This was certainly true for at least part of the Middle Ages. As Saladin famously said to Guy of Lusignan, "kings do not kill kings." [0] [0] https://en.wikipedia.org/wiki/Guy_of_Lusignan
Some rather limited parts of the Middle Ages, perhaps. The Burgundians and Valois were pretty hard on each other.
p.s., I'm reading up on the Burgundians. They do seem like a bloodthirsty lot. Thanks for pointing them out.