> what does that imply for our society and economy

Markets are always in flux. They're humans interacting dynamically. What will be the outcomes from the decisions of millions upon millions of people? Who knows?

>What will happen to all the humans who work to produce these things when AI can do it all and all you need to make your own is a computer/internet connection

Massive decentralization, institutions people think are required will fade away, many big businesses won't be economically viable.