You're right to be unsure of (1); it is often claimed and simply isn't true. Of the top thirty jobs in the United States, 29 existed in some form or another 300 years ago. Only number thirty (computer programmer) is new.

I've linked https://www.youtube.com/watch?v=7Pq-S557XQU many times and I'll do it again.

Recently I've been coming to the conclusion that whilst free market capitalism deals very well with a fairish distribution of scarce resources, it doesn't deal very well with abundance (or rather, it deals ruthlessly with it - the price drops to near zero). We're facing an abundance of labour, and I don't think things are going to end well if the market rate for that ends up so low that labourers can't eat.