Disappointing buffet breakfasts

We've stayed in a few lovely small hotels and guesthouses in Thailand. 

Many of these places offer a complimentary buffet breakfast which is a nice touch. But the majority of the time they are inedible due to the temperature. 

Take where we are staying now. Breakfast is from 7-10. Even if you get down there at 7am the food is lukewarm. 

Cooked Thai food sits in silver trays with lids and a heater underneath. The heater is barely on, if switched on at all. Staff don't proactively replace or add hotter food. They open the lid, give it a stir and move on. 

The Thai tourists seem to eat it even if stone cold, so I assume it's the norm and not an issue. At my current hotel, the western tourists have taken to bringing their own food to the breakfast room. 

We only go in there now for a coffee and fruit, before walking across the road to get a freshly cooked fried rice for £1 each. Much tastier.