I don't agree here. The only fault of the parents is that they let the whole situation take its course. They are presented in the game as too gentle towards children. And this is at least not realistic. I know several family businesses where children were involved in working in family businesses from a fairly early age. And in the game, according to the lawyer’s words, the parents’ company employs 1,100 people. And I would never believe that in reality parents would not prepare their children to manage a business in the future.
yours seems to me to be a fairly superficial judgment.
practically everything negative that happens in the story is their responsibility.
Jaye's relationship with her brother is ruined when the latter decides to stop accompanying her to school and basically avoids attending her so she can make new friends. the parents know the situation reassure MC, who will be 6-8 years old at the time, that they will explain it to Jaye. apparently they don't, and if they do they are not at all clear as Jaye doesn't know anything when MC 15 years later explains it to her. and given that at the time the two siblings were precisely 6-7 years old any excuse about sexual tension between the 2 is really not credible.
then, as you say, they decide to let things take its course and because of that they accept that their son as soon as he comes of age goes around the world, to very dangerous places (and they know where he is from time to time) where he often risks his life in really borderline situations.
so after they made sure that the childhood between the 2 was marked by misunderstanding, after they gave MC 5 years of sabbatical, they give him their blessing. they set all the stage for MC and Jaye to never regain a relationship, but at this point they are also okay with their relationship becoming something more.
if there is a scenario of resentment and misunderstanding that MC can let Jaye drown at sea, it is only because of their conscientious parenting
by the way, Sara in particular is also terrible professionally. she has a co-worker with an unhealthy fixation on her, which she doesn't realize, falsifying the results of her work, and even that she doesn't realize, making herself co-responsible for a scam.
and even now the completely instinctive imprint has remained in the company: an unknown journalist who appeared out of nowhere is brought up to speed in the midst of a legal war, experimental treatments are being conducted without any respect for the rules, and always out of politeness there is even an offer to clone a dog. the Prizer, in reality, would distort them in any court of law, third world included
but let's drop that last part, which is part of the cartoonish spirit of the story being told.
remains that every difficulty in the relationship between Jaye and MC stems from conscious choices of their parents, who made it impossible for 2 children to have a normal and frank relationship