I have had one of my exchange account blocked after I receive a payout from a gambling website. I still have my funds on the said exchange and I feel like not retrieving it anymore given that they are asking for tons of information just to get my account unlocked. Knowing that online gambling has long been frowned upon in this country, it's only recently that they managed to up their game and involved cryptocurrency exchanges in the said crackdown. Perhaps some countries had it easy, but in the Philippines, it's exceptionally hard to go and gamble online and try to withdraw your funds.
its very common for Philippines to block suspected gambling site's tansactions
one of the most popular wallets coins.ph is doing exactly that , sadly
think they have a database of the deposit wallets and if it matches your transaction addy - you are in trouble
the same is with Coinbase , they can block your account and hold all the coins in it , it is in their TOS
I expect even more draconian laws and rules introduced very soon due to AML and counter terrorism laws
while the amount of cryptocurrency related crimes are very low in comparison to fiat , governments choose to pick on crypto