But (and please forgive me - I have just said I'm no economist!) - why can't we do more to equalise society? No one needs to be as rich as the richest people in this country, do they?
If there was barely any pay differential between working at Tesco, and studying for treats and taking on the subsequent debtand responsibility of being a teacher, or a doctor, or a business leader, then no-one would bother. And we'd have a shortage of degree level professionals. So basically most NHS and education professionals, engineers, scientists, pretty much all the skilled people we need to fix our problems and develop our country.
Jeeze, I'd have loved to earn the same as I did as a teacher, in a job where I had no responsibility and could forget my work as soon as I clocked off. And my nurse daughter looks back with fondness at her student job on the tills at Tesco. She'd certainly go back if she could earn the same.
There has to be a pay differential if people are to study and take on scarily responsible jobs. But no-one is going to pay professionals a lot more if minimum wage is raised, in order to retain the differential.