I think re-evaluative thinking like that should be encouraged, so the last thing I want is to seem dismissive, but I do have to say that “solocracy” sounds a lot like libertarianism. I would also have to point out that you do rely on majority rule to decide the basic rules of governance, and that is precisely where the imposition of a particular point of view on society as a whole has the greatest affect.
It is a question of justice. Liberalism promises justice, but it is based on beliefs. So it is all about some people imposing their beliefs on others to achieve justice. Yet, as you have realized, that can’t be what justice is.
I hope you might be willing to read my “Re-thinking Individualism” here in Medium. I would be interested in your response to it.