Soit Twilight has an apt name - darkness will soon fall - permanently. Aside from what this or that bar may do, or perhaps bigger redevelopment plans, the business model has no future. Being a prostitute, especially working in a whore house, is now neither socially acceptable nor economically necessary for most Thai boys. Just look around the soi at the guys working there; aside from those from neighbouring countries the quality ain't what it was. And the numbers of those who might consider such a career is further being suppressed by the penal system as so many end up inside for drugs.
Further factors affect the customer base. Despite what foreigners see in BKK or Patts, Thais have always been the vast majority of customers for the business (albeit in maybe cheaper places than Twilight). Again, social acceptability for Thais means everyone must be much more discreet - something now facilitated by the internet. For many Farangs the attraction of Thailand was it was cheap - well not anymore. Prices are up across the board both due to inflation and exchange rate issues (depending on one's provenance). And those Thai guys openly selling their arse now do so for a premium price.