The task that they are hiring for does not generate enough revenue to be worth at price X. The business may not stop from operating if these tasks are not done, or not done on a priority basis.
So... the business doesn't even generate enough revenue to afford hiring the kind of people who can keep it running well, or at least not as well as its owners would want it to be running?
No, you are free not to accept inadequate pay, just as the companies are free not to accept excessive pay. It's a marketplace, just think in terms of bids and asks.
It's a marketplace until the business starts using a nonexistent "shortage" to lobby government to add more visa slots and create programs to funnel more students into the jobs it wants to pay less for.
It's also a marketplace where one side has much more information and negotiating power than the other.
Of course you are free to do whatever you want, it's the entitlement that pisses me off. Somehow, employees charging "too much" is not ok and totally not the companies' fault, whereas offering too little is great management. Then they wonder why there are six million jobs that they can't fill.
If there are no takers, then the task should not be done, yes. What a lot if people seem to imply is that these jobs should not be advertised in the first place, which I disagree with.
Unless they people causing them waste incur costs greater then they benefits, it won't change. Hiring has gone digital, reducing costs, so of course garbage job postings have increased.
Should workers be doing charity work now?