Are those candles on all those chandeliers or are they light bulbs made to look like a candles. Would be surprising if it's the former and plus where would all that wax fall?
They're light bulbs. Like this one.
Some are even LED lights & battery operated which you can really blow on them and the lights would go out - https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=blow+LED+candle+
Some chandeliers used candles back in the day, but all I can think is how much of a fire hazard it must have been.