That only shows what they hope will happen. In reality menial tasks can be automated and humans can be shifted to more creative roles, which in all honesty means execs could be reduced and replaced by AI. They do nothing other than follow trail of money and waste company resources, something AI can be much more efficient at.
Edit: also it literally hasn't. There have been many times in human history where there simply weren't enough low-skill jobs for everyone who needed a job to support their family. See the Great Depression.