In how long? Don't forget the building of the institutions that predated Yew.

1959 was when Yew became Sg's first PM. in his famous televised speech, yew announced the separation from malayasian federation in 1965.

dont forget that singapore was under colonial rule before that. noone can deny the success of singapore, the city state with all the regional challenges. it took them about two decades.

i would give 5-10 years for our nation states to become functionally successful if they split and became city states.

its time for a change.

Singapore government definitely made smart moves and had a strong vision. But you can't omit that its geographical position gave it a tremendous advantage with regards to trade. It will be very hard to replicate elsewhere, others will have to find similar stable streams of income. On top of that, Singapore has access to a very large low-paid workforce in the neighboring countries, which eases offloading necessary but low-value activities.