People have a right to acquire whatever capital, that is tangible goods, they personally need to survive and for the purpose of securing the well-being of any dependants, in addition to making some savings for their future.
However, I am not of the mind that private ownership and possession of assets or resources constitutes for anyone an absolute, unlimited or inviolable right and especially not in cases where the exercise or enjoyment of that ownership are detrimental to the common good, the environment or the welfare of the lowest socioeconomic classes.
Once one's own needs and that of dependents (i.e. spouse, children, disabled relatives or elderly parents) are satisfied, and appropriate savings are invested for the future, I believe that superfluous wealth - in excess of what one needs for a comfortable and fitting life - ceases, morally at least, to be at the absolute discretion and enjoyment of the owner.
In a sense, the legal owner becomes a trustee/steward of the excess wealth on behalf of the commonweal, that is, of the poor and underprivileged in particular, who are the true beneficiaries of that wealth (the real equitable owners, one might say), because they need it most.
I am in favour of progressive taxation and land value tax.
In extreme cases, where the common good demands it, I support the right of the state to expropriate the property of the mega-rich.
That said, I am more inclined to rely upon the tax system in tandem with persuasion and appeals to clemency vis-a-vis the super-rich, reminding them of their grave obligations towards the disadvantaged members of society and to nature. State-involvement and expropriation are best reserved for the most extreme cases, as a final resort.
But for me, that remedy always exists.
We need to safeguard the individual's right to autonomy in the private sphere and certain physical possessions, particularly home-ownership, are fundamental to that. We also want to encourage entrepreneurship, small businesses and the creation of new jobs as a direct consequence. There must, therefore, be a careful balance between mitigating the excesses and injustices of capitalism, without succumbing to a Marxist collectivism that erases any freedom and independence for the "individual person".