Amazon and eBay should crack down on it so the government doesn't.
History is full of examples of companies doing the right thing if only to prevent government regulation.
Citing a couple would help your argument.
The "business model" of the EU is to check if something is going wrong or could be changed to make the life of European citizens better, to then show that to the industry with "hey, we noticed X - you got a chance to clean up shop on your own, or we will force you by passing laws".
I'm not making an argument. I'm stating a fact that is well-known if you follow business at all.
In the United States, it is common for:
1. Politician to complain about situation.
2. Congressional committee holds hearing about situation.
3. Congressmen threaten to pass laws about situation.
4. Industry involved in situation makes changes so that laws are unnecessary.