^ You have your choice either to pick them or not, on this thread, you will know regarding the withdrawal fees and the withdrawal minimum required amount which pretty has an advantage upon picking a gambling site to use. Gambling is a kind of business, they can even make money through withdrawal fees, that is why do your own research before picking a good gambling site to use. Even custodial wallets do not have a standard network transaction that is based on the BTC network, the fee is always greater than the network fees, and that is how they also generate profit and I hope you understand because it is all about business.