Malaysia is developing parallel businesses to Singapore and over the long term it would be more cost effective to operate in Malaysia rather than Singapore.
Singapore would have to diversify and depend less on businesses that Malaysia is aggressively diversifying into.
Singapore would direct more of its busineesess into high end products and knowledge based economy but this too will eventually be caught up by Malaysia if Malaysia is as aggressive as during Tun Mahathir's time.
Eventually, in 50 years' time, Singapore would have no option but to beg into joining Malaysia.
That day will be a glorious day for Malaysia!