If i'm not mistaken there's no rule/law yet in our country about bitcoin gambling. It is not that widely spread yet so governments aren't making any move about it as of now but two of our local exchange site TOS saying it's likely prohibited. The other one even locking up the account together with their btc once they have found out the btc comes from gambling site.
Well a local exchange site prohibiting gambling funds from goig through doesn't really make it illegal. And if gambling online with regular money is very much allowed in most places, i don't think btc gambling will have a different acceptance. Its basically the same with.
Banks are against the buying of bitcoin since they are blocking the card issuers from completing transactions all the sudden:
I have made several purchases using my credit cards in the past and did not receive any cease and desist orders from either my bank or my credit card issuer.
So this must of just started within the the past month.
As for as the exchanges go, coinbase has this rule in their terms and services agreement that you are not allowed to send to a gambling website the funds that you have being held on their site for you to use.
Many of players of such sites have complained that they have their accounts frozen and even terminated by this exchange for breaching their TOS agreement with doing just this act of sending from their CB account to a crypto gambling casino site.