I’m not Thai, so what can I say?? Lots of “important” wats has been overcrowded with the stalls of merchants selling stuff to be used for merit-making, food for visitors and food to feed the fish in a khlong or a pond near the wat and hardware. Many temple-compounds accommodate nowadays complete markets. One of the many sad examples is Wat Phra Sri Rattana Mahathat Vora-Maha-Vihara or Wat Yai (วัดราชบุรณะ) in Phitsanulok where even the ages-old structures have been covered by neighbouring stalls.
Shortly I found in the entrance of the main-hall in a temple in Nakhon Nayok an ATM-machine: first put off your shoes before entering and secondly draw money to be used for merit-making inside… Everybody is making you comfortable!
A pity that money seems to start overruling the calming, peaceful and sacred feeling one had once entering a temple!