Yeah I think we often forget just how brutal and ruthless you had to have been during Feudalism, especially earlier feudalism or the period prior to Feudalism proper i.e. during the early formation of the socio-economic and political structures that we would then call Feudalism, in order to succeed or survive politically. The violent competition between the aristocracy was very real. It's funny in the case of Henry VII and Richard III because obviously while the view of the latter as a deformed sociopathic tyrant and pervert has been influenced up to the current day by Tudor propaganda (of which the most famous example is the Shakespeare play Richard III), it's nevertheless hilarious that there has been moves to try and legitimize Richard III by claiming that everything bad claimed about him are Tudor lies, whereas you can literally just read contemporary or fairly accurate accounts of his reign to realize that mans was also a ruthless murdering bastard. So was Henry VII obviously. They all were frankly. If you weren't then you ended up like Henry VI.

I was reading Southern's Making of the Middle-Ages recently, and although it's definitely dated in a bunch of respects, it does emphasize how during the period of feudalism's formation in Northern France, there was real, extremely brutal and violent struggle, showing great political acumen and tact, by the brutal aristocratic warlords who were rising during the 11th century to form the Knightly class. It leaves little to doubt as to whether these people knew what they were doing. He also emphasizes their fascinating relationship with the university men, who during the High Medieval Renaissance were becoming more and learned, numerous, and essential to the construction and administration of feudalism's political and bureaucratic structures, and how they also played the role of providing moral justification and psychological care to the many deeply guilt-ridden, violent men of the nobility and warrior class.