So does anyone know why the (dis)investing fee rate is always the same : 2%?

Not 1,5%, not 2,5% or 3% but always 2%?

Is there a specific reason? A kind of common agreement between the platform or it's something else? TYVM
The divest fee for gambling sites aren't always the same, I guess why the 2% was mentioned because the top site listed on dicesites like bustadice have a 2% fee.
On crypto games the divest fee is very low less than 1% and only lasts for 21 days after that you can pull your investment out without paying any fees (
source).