When you purchase a gaming chair, if it is from a reputable brand, and it is made with good quality materials it should not break easily. While it will begin to wear down over time with continued use, it should not break easily.
The materials used are made to last, and they should withstand things such as accidentally tipping a drink on them, or moving the chair while it is in use.
If the chair is faulty, or if it is holding a weight that is above its maximum capacity, this can cause a gaming chair to break easily. If lower quality materials are used, this can cause the chair to break too.
When choosing a gaming chair, while the majority of people will choose a chair for comfort, you will want to take into consideration how it is built too. A well-built chair will have a good structure and will be built out of sturdy materials. It will use padding that takes a longer to be worn down on the seat.