The current situation leads to huge amounts of scalping. A recent example my wife and I both attempted to buy Peppa Pig tickets at the time they were actually made available to the public. No luck with the online sales platform the mid range tickets were 380 HKD within minutes however we noticed Carousell sellers offering these tickets with a 200 HKD to 400 HKD price premium. For Peppa Pig Tickets not crack.
In a sense good on them - making a profit from a high demand low supply item but this view is predicated on the idea that access to the item was fair in the first place. I suspect there are many low tech and high tech ways to game the system from having a cousin who works at the ticketing centre or hiring people to stand in line to installing so dodgy apps/bot scripts to scrape the online html to those of us who don't see this as an arbitrage opportunity we could call it dishonest.
The situation isn't unique to tickets - any highly in demand asset seems to be subject to the same profiteering in HK - the yearly iphone debacle is a good example of this.
So either an epic cultural shift occurs to make this behaviour unacceptable - which is unlikely or suppliers / the government could ideally intervene to disincentive or make it cost to do this. For tickets perhaps linking the HKID to the purchase, increasing fines, limiting reselling, writing in a non transferability clause, an improved reporting facility for scalpers etc or perhaps suppliers could simply improve the supply and timeframe of release of tickets to not create such an artificially high demand in the first place.
A complex issue and one not unique to HK but it does seem to happen a lot here.