Malaysia & Singapore with remaining large European population

OK, what PODs would be required for there, after Malaysian & Singaporean independence in 1957, for there to have remained a substantial population of Europeans in a similar manner as say Rhodesia/Zimbabwe or Hong Kong ?
 
In Malaysia's case, getting rid of the social contract would be a good idea.

Yeah, ya kinda need to get rid of this, or have the European population be determined to hold on to their property in Malaysia.

Perhaps the social contract and the Ketuanan Melayu idea force the Europeans to ditch Malaysia for Singapore, which means they have a major impact on the development of Singapore.
 
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