No, business people ANTICIPATING demand is what creates jobs. Demand can exist but if nobody responds to that demand by creating goods or providing services then quite obviously no job will be created.
Yes, but in practical reality the response to demand can be taken for granted provided the demand exists. The demand cannot. It depends on widespread dispersal of wealth through one mechanism or another -- in a capitalist economy the usual mechanism is high wages for work. Drive up wages, you will create more demand, and there will be more investment and more job creation.
More money to the rich does NOT create jobs.
More money to the middle class and poor DOES create jobs.
It's that simple.
So when you raise taxes on the wealthy and they make a decision to invest elsewhere? How does that help your middle and lower classes? They've lost their job and the revenue that you've promised would be "dispersed" is now no longer being generated.