If the supply/demand curve pushes the salary above the value created, then the job will disappear and that value will never be created. That is how resources get allocated to the most valuable projects.
(Value of course is subjective, but here it refers to things that can be measured in dollar amounts).
If you're creating $1M in value, but there are only 100 jobs and 1000 people applying for them, you'll never capture the $1M.