the main traits inherent in alphas, one of which - he wants something - he gets it, which usually does not take into account social and other prohibitions. In modern society, this is a path to prison
Not necessarily.
This is actually something that's been touched on in legit psychology (not armchair Internet pseudo-psychology on places like Twitter or Tumblr) for decades, within the context of Antisocial Personality Disorder or "sociopathy" (which tends to overlap a lot of the assumptions about "alpha males"). Basically, it's only the less intelligent, low-functioning ASPD types who wind up as criminals or the like, because their weaker impulse control gets them into trouble. But more intelligent, higher-functioning types have a much more effective ability to pursue their goals at the expense of others while still covering their tracks or otherwise avoiding legal entanglements (they're more likely to exploit the system to their own advantage than they are to fall victim to it).
It's why an old joke is that the main difference between a criminal, a used car salesman, and a politician/successful businessman is just a question of IQ.
Buckminster Fuller discussed a similar concept back in the 1960s, where he hypothesized that the traits that made someone a dominant ruler in the early years of humanity (raw strength) was very quickly replaced by being one of the people who are capable of controlling military power, then later trade, and now information. The "Great Pirates" as he called them were people born with an innate tendency to understand how to manipulate and control others to get what they want, rather than working with others as equals to the benefit of all.
In other words, someone with a dominant personality and who is focused on taking what they want even at the expense of others doesn't automatically mean stealing or taking things by force. Alphas aren't just physically imposing, they're also charismatic, intelligent, and determined enough to get what they want by whatever means are most effective. Far from winding up in prison, they're the kind of people who can take what you love most away from you and get
you thrown into prison for resisting.
But this is an NTR game... MCs are retarded and put up with everything. Despite "hating" it.
The full experience is the MC being willing to marry the girl anyway regardless of how used goods she is by that point, and he probably winds up raising another man's child while she goes out on the regular to get fucked by strangers while he sits at home and jerks off while crying.