Why is ‘there isn’t enough money’ always the answer?

Why is it that whenever there’s a problem, a serious one requiring either money and seismic change, its solution seems next to impossible? Not only this, but when people table solutions, they’re ridiculed as ignoramuses or maligned as quacks, writes
Let’s take our nurses and midwives, who have voted by 95% to go on strike for the second time in 100 years.