There seems to be a bit of misunderstanding going on here.
The only reason strong AI was brought up was to point out that there are many jobs that simply cannot be automated unless you can automate understanding and generation of natural language. You can’t automate the marketing department unless you produce a computer with strong AI.
Sure, I agree that there are lots of jobs today that are automatable with only evolutionary improvements in factory equipment, and there are catagories of white collar and pink collar work that can be eliminated or transformed by automation. That’s called productivity increase. But you can’t fire your legal department, you can’t fire your marketing department, you can’t fire your sales department, you can’t fire your HR department, even if you can make their jobs easier.
So even in an industry where literally no human being sets foot on the factory floor once the factory begins production, companies will still need workers. But all we’ve imagined then is that there are no more agricultural and industrial jobs. I still don’t understand the argument that the service economy depends on a core of residual industrial jobs. If only 1% of our workforce is employed in agriculture, and 10% is employed in industrial work, why would it cause an economic collapse if we slowly got rid of those jobs? Why didn’t we have an economic collapse when the 90% of the population employed as agricultural workers were put out of jobs?
In other words, I think an argument is being made that the wages of industrial workers somehow underpins our economy, and once those are gone the vast majority of service industry jobs will disappear as well. But I don’t understand why that is predicted to happen.
As for the divide between expensive luxury goods available to the super-rich and cheap crap available to the super-poor, and nothing in between, I suppose there is a bit of truth to that. Today, any goods that require human intervention are expensive, while goods that can be mass-produced with no human labor inputs are cheap. But what is so horrible about that? If you want a hand-made wooden bowl it will cost much more than a stainless steel bowl from Target. But is that wooden bowl really a “better” bowl? It is more expensive, but what makes it better, what makes it a luxury item? Anybody remember when digital watches were luxury items? Nowadays it is pretty much impossible to find a luxury digital watch, since digital watches are literally being given away in cereal boxes. What makes a mas-produced stainless steel (or the despised plastic) bowl crap but a handmade wooden bowl quality? Yes, the rich today can get a jewel-encrusted bowl. In 20 years the poor will be buying cheap mass-produced solid diamond bowls, and everyone will complain about how tacky and cheap looking they are.