Wow, I did not realise that it was not allowed in these countries, Coinbase seem to be very strict in terms of abiding by the different laws, I guess to operate in this scene you have to somewhat.
I am not sure how feasible it would be to use a VPN as you would surely need to link you bank details as that's how Coinbase allows you to buy and sell and I would think it would show up that you are located in DE via your bank details
i think that's the right think to do,obeying the rules is the right thing,would not mess up just because breaking rules and loss all of assets,if their users were catched using vpn or any other thing to bypass the government rules,it's not coinbase's fault,and yeah bank details can't be faked