Unfortunately only a few select elites can attend elite programs like INSEAD or HSW.

INSEAD is especially hard to break in as there's a quota on each nationality. Every year the school caps the intake at about 10 odd Singaporeans. Minus away those that are MBB sponsored, there are only about 5 odd Singaporeans who are self sponsored every year. Not to mention the Alumni interviews which you need to pass. These alumni only allow candidates with prestigious backgrounds eg MBB/high finance to pass as they don't want low-calibre candidates to dilute their prestigious INSEAD branding. It's a bloody high barrier to entry.

And even if you get in, the school fees are more than 2 times the price of local MBAs. Unless one is really earning high income eg at least $8K+ at about late twenties (average age at admission), one wouldn't really be able to afford/get a decent loan quantum.

Also consider the fact that INSEAD has a campus in Singapore, this gonna drive up the applications from Singaporeans. So if you are a Singaporean applying to INSEAD, it is like an uphill battle carrying a 20kg field pack with matador. Only creme de la creme can get in. So for most people, local MBAs still remain as a more attainable option.