What has truly happened is that the cell phone has reached out to almost everyone improving the economic efficiency of almost everyone. This translates into an overall increase on a global scale that now sets a completely new base underlying all activity.
This infrastructure is nicely maturing and we still need the activation of natural community and internal credit support to totally end poverty. This is becoming much easier though.
Simply ending global poverty will accelerate everything else and this allows us to achieve global prosperity by as early as 2050. That allows for a generational global cycling on literacy in particular.
The next fifty years would see all remaining significant disparity disappear.