sg has to make it exclusive because of the simple reason that other neighbouring cities are cheaper.
regional concert goers and tourists would not choose to come to sg to catch these concerts given a cheaper choice.
henceforth sg has an interest to make these blockbuster concerts exclusive ... so neighbouring concertgoers have no cheaper choice but can only come sg to spend top sg dollars, food, hotels...
By doing this you attract the cheapo fans who will only spend at hawker and stay budget hotel. Because all the budget used for the tickets already
If sg wanna concert hub they need to upsell the experience with more exclusives, like vip boxes, limited standing pit, better audio etc. only then you will attract the rich crowd who will pay for comfort instead of squeezing with the cheapos. And these high spenders are the ones who will stay mbs / fullerton & spend the big bucks
Take the 20m and make a proper concert place with good aircon and facilities instead of the shitty national stadium with bad audio and seats so far from the stage