Futurology

The Waterschap may decide to lower the water level. When that happens, the wooden poles are exposed to air. When wood comes in contact with oxygen, it will start to rot. The decay of the wooden foundation is why houses in Amsterdam built on wooden piles can lean to one side.

https://whatsupwithamsterdam.com/amsterdam-houses-crooked/

Wood rot only occurs if the water level is too low. Some of these poles have lasted 500 years.