And in a globalized world, if someone has built something, that is of use for many, a few will be even more richer than in today's term, by the nature of it. It is simply not comparable to some local baker, where only a few citizen will go to on a day.
The divide between the have and have not could be stronger, though, when you dont have, maybe that is still a lot more to what you have today (e.g. medical progress), it is just not as much as the ones at the top.
And then the cycle continuous, the divide will be used to form agendas, and so on.
I think what hinders us the most in installing a proper system for globalization, that all these areas have grown for centuries and it is definitly not easy to unify and agree on something. I hope, people have answers for that. I definitly do not want a system like communist china for that, i just "escaped" one myself, even though it probably has many advantages too. :-)