Not necessarily. Such forces could be outvoted or out maneuvered.
> More likely it will look like the current welfare schemes of many countries..,
Maybe, maybe not. It might take the form of UBI or some other form that we haven’t seen in practice.
> now add mass boredom leading to unrest.
So many assumptions. There is no need to just assume any particular distribution of boredom across the future population of the world. Making predictions about social unrest is even more complicated.
Deep Utopia (Bostrom) is an excellent read that extensively discusses various options if things go well.