Let us assume, more than 50% of all workers/employees will be replaced by AI or robots over the next 30 years. What then? How do we keep this society going, if most folks won't have any work or income? Who will create the demand for work, who will consume? The only way this can work is that instead of paying individual employees, businesses will have to pay into a national fund, which will then pay out a base income to everyone. Imagine what we can do with all this free time, do sport, learn to play an instrument, create and be healthy active, be nice to one another - I think if done right, this could work out very nicely.