[TheOtherHobbes]

The issues are really social/political/behavioural.

If white collar jobs are decimated the economy will collapse, because it's still - nominally - a consumer economy, even though most of the spending comes from the top 10%.

If 25% of that top 10% is suddenly out of work, that's a huge chunk of GDP gone, and a likely depression as the knock on effects spread.

I don't see anyone thinking about this seriously. [Something something UBI] is not a serious attempt to deal with the problem.

Ultimately you end up with an economy where most humans are surplus to economic requirements and will literally be murdered by economics.

Or wealth and opportunity are widely distributed, but "jobs" are nothing like they are today.

Given where we are now option 1 looks closer.