Which necessarily improved when the Gambling platforms had more withdrawal options, things Like: PayPal, Debit Card, Online Gambling, Cash app, Gift card etc. Having the freedom of having so many options improved the players willing to deposit money by almost 49%!!
I it not about having options only.
It is about making it fast and without problems. Preferably decentralized.
freebitco.in for example is rarely doing manual inspections and every other withdrawal request is fully automated. If you have a rock solid, hack-free casino you can do this too. Otherwise you'll have to manually check almost every withdrawal request which is going to frustrate the players and then naturally they will leave this casino.