The economy is always going to evolve but the fascinating thing about people is that we are all so different.
We have different skill sets and different interests.
If we were all the same, we would all be doctors and there would be no nurses or administrators.
There would be no building engineers and architects, no supervisors, no construction workers, no manufacturers, no importers . . . no hospitals.
You'd have all cooks, no waiters.
All CEOs, no workers.
All lead singers, no drummers.
All quarterbacks, no receivers.
In other words, there will be a service economy because people do do different things (I said doo doo).
For some reason, we all do different things and it magically works to create a diverse economy.
That's the biggest difference between humans and animals. It's not so much that we talk and have a higher intelligence, but that we have so many different jobs that collectively create a high production.
If everyone was an Einstein, we'd have no cars or spaceships or mass produced food. I don't think he could handle the physical labor.