You are correct about potential excess capacity. However big difference is that many of these are developed with private money.
Gambling - Sentosa dumped in billions, Sands also dumped in billions but agree that we probably backed some of it when recession hit.
Shopping Mall - Many are developed by foreign and private developers with strong balance sheets. So even is it fails, the Far East, CDL, Capitaland's balance sheet is strong enough to tahan.
And unlike Dubai, every $1 you spend on glitzy project 70 cents already sapu backing into government coffers. For ION project, just imagine how much Gov sapu back in terms of land cost, stamp duty, GST, worker's levy, diesel tax, ERP, property tax, utilities. OK part of it developed by capitaland so from right hand to left hand. The other part by HK developer - money right into Gov pocket.
In Dubai, a lot of the costs of the grandoise projects go straight into foreigner's pockets. Why do you think ang mor so happy. As long as you can sell WOW factor the Emir will want. Problem is now they discover emir is the poor cousin of the Abu Dhabi emir.