Monarchy and feudalism are not equivalent: it's totally possible to have a feudal republic.

Enlightenment was a response to feudalism. The fundamental thesis of enlightenment thought is that there are inalienable rights shared by every human being, and that unearned obligations and privileges, like those seen in feudal patronage cultures, are incompatible with just society.

The doesn't really counter feudalism though. Perhaps in mentality/ideology, yes, but in practice, it's possible for people to agree to such a system and be content with it. We do it all the time in a capitalist society, except here it's called a "corporation", and the "barons" are called execs of "subsidiary companies".

The corporation is not a person, and executives do not have privileges and rights greater than any other person by birthright.

In a feudal system, you owe tribute to your liege by virtue of the fact that they were born of a higher rank than you and you were born within their demesne. If you don't comply, or if you try to find a different lord, you get killed.

Feudal is not another word for economic inequality.

> The corporation is not a person, and executives do not have privileges and rights greater than any other person by birthright.

In theory, but not in practice. Lobbying obviously benefits corporations, as does the socio-economic status that literally lets execs get away with murder. Furthermore, the idea that corporation != literal person doesn't change the fact that the piece of paper is treated as a person in court.

> In a feudal system, you owe tribute to your liege by virtue of the fact that they were born of a higher rank than you and you were born within their demesne. If you don't comply, or if you try to find a different lord, you get killed.

Ok, so your understanding of feudalism is more comprehensive and definitely more rigid than mine. I'll concede the point here.