That's a fairly legitimate question. And the answer is, they'll get a job working for someone else who needs a desk jockey to push some paperwork around, or they'll get some other kind of job, or they'll start their own business since it will be much easier to do without them siccing the local enforcement on you for not making their jobs meaningful.
I mean, what if all their jobs disappeared tomorrow? Sure, there would be a time of panic and freaking out. That would be inevitable. But it would sort itself out over time. Contrary to the popularly expressed belief of politicians, people, left to their own devices, will not simply sit on the floor and starve to death. They'll find something to do to feed themselves. Many of them will probably start businesses of their own. Leave the market alone, and people will sort their shit out.

Here's a question for you. Those people are actively participating in an organized effort that makes it much more difficult for the average person, let alone a poor person, to start a business or get a good job, and thus improve their standard of living and that of their family. Should their jobs exist?