I fully challenge your statement of fact. Do you have any proof of this? I do agree that for credit card transactions, the cardholder won't be responsible.The credit card company,or the bank,always take the economic loss,if the card owner is not responsible.
https://www.nerdwallet.com/blog/credit-cards/merchants-victims-credit-card-fraud/
http://www.lowcards.com/pays-fraudulent-credit-card-transactions-24850
http://www.creditcards.com/credit-card-news/understanding-EMV-fraud-liability-shift-1271.php
At first, the issuing bank will remove the charge from the cardholder's account, so the cardholder is not liable. But, they will then determine if the merchant had adequately protected the transaction. If not, they will revoke payment to the merchant's account. At this point, the merchant is out both payment and goods.
Now, these reflect US rules, and the OP is in Europe, and the rules over there are probably different.