It's worth noting that the issue of Alto's "inheritance" is as much of an issue as Alto makes it to be. To the best of my knowledge, there's nothing really stopping Alto from simply dropping by and wishing his father a happy birthday (or doing it by phone) and once again heading off on his merry way - nothing except for his inner demons, of course.
Also, while I'm obviously still unaware as to the true nature of Yasaburo's nefarious(?) plans, I will point out that his words do later strike a chord with Alto and prompt Alto's character defining monologue at the end of episode 23. So for good or for ill, you cannot discount Yasaburo's view when trying to make sense of Alto's character.
But this is a discussion best saved for that time.
