The number of PRODUCTIVE jobs has been declining for decades. The number of PARASITIC jobs has been rising for decades.
The number of government parasites will rise to fill the vacuum created by the falling need for productive workers.
Over time, in theory, the parasites will be feasting off the labors of robots and other automation, all powered by extremely cheap energy, such as nuclear fusion.
So far, the theory is a failure and the world economy is a mess.
Nuclear fusion would go a long way to fixing it all.
However, fixing the economics will not fix the problem of declining liberty. Armies of government parasite workers also feast on what remains of individual liberty.
In theory: utopia.
In practice: dystopia.
The parasite problem is independent of technology. Ancient Rome got overrun with parasites. A low-parasite economy is perfectly compatible with high-technology, as long as people treats this as tools and not as magic.
Reducing the parasitic job load would probably increase the productive job load.