Technology is creating a lot of displacement of workers, killing old job skills in large numbers.   A small number of bright, hard working tech engineers are capable of effecting millions of workers in a targeted industry.  

By numbers I think your right, there are going to be fewer people working, and more people requiring support .   

There will not be a shortage of money.  Wealth will still be created in ever increasing amounts world wide, but the return(money) on growth will be heavy skewed to preferred investors.   *While professionals will certainly have good wages, they will have elite wealth through investment by virtue of having large amounts of discretionary money.

The challenge seems to be in keeping wage earners current with new technologies.  The irony is that new technologies are often designed in ways that reduce the role of an employed human being!    There will be idle people

Ownership and financial services are the big winners.