When you have a culture where ignoring laws is a daily occurance what should be the expected outcome? This isn't a problem with just the RTP not enforcing laws, it is a problem with every Thai routinely ignoring laws. Keep breaking small laws leads to eventual big law flouting as well and the ramifications when it all goes pitong, such as the fire. The RTP are a part of the problem, but the Thai citizens are the biggest portion of the problem.
Thr only way to turn the phenomenon of Thais ignoring laws around is to act in a draconian manner until Thais realise the consequences and start proactively self governing their own behaviour. If they want a model that works then they should turn to the Singaporean model of law and order, where fines, floggings, jail or the death sentance are all used to deter criminality. It might seem to be too big brotherish but it works a treat.