>>So the electoral system is the reason for the prosperity ?
No, but if it ain't broke, don't fix it.
The only reason it's so attacked today, is because it anointed a dirty boy rather than the decent deserving person.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1