Will there be enough jobs for all those displaced in those ‘other areas’? And how long is it going to take for those to materialise?

Traditionally society has overcome these type of changes. But they weren’t as wide as this one (AI has a huge range of usecases) nor was the change as rapid. And as AI grows into new areas it will continue to displace jobs and human activity.

I really doubt this will turn into a net positive for society and if it does it will still be a very hard transition for at least a decade.