Something I have sometimes thought about is what happens when all these jobs are replaced?
If a large amount of the population doesn't have work, and a significant other chunk is worried it may soon join it. Then they either don't have money to spend, or are scared to spend what little they have. Once this gets over a certain point then businesses lose a large amount of their paying customers, leading to further job losses, and falling profits and snowballing the situation. Governments also lose out as revenue from taxes decreases sharply (and as such may not be able to support the unemployed). Those who do have the money are also particularly good at not giving it to the government.
What happens then? Do governments collapse and the uber wealthy step in and say 'we are your new overlords'? We effectively go back to monarchy?
Or do we have massive uprisings as this time we don't have uneducated peasants at the bottom but somewhat educated people who can understand what is happening and also use technology to collaborate? Do new companies spring up, willing to offer products at reaonable prices and take business away from the greedy ones? Does traditional currency get set aside and replaced with new ones, causing a reset and effectively destroying the wealth of the wealthy? Or something completely different, taking into account factors I've missed?