You're saying that disputing with Amazon will pull all your kindle books? I don't think that would fly in countries with consumer rights. Bear in mind this is also a Marketplace seller and not the real Amazon.
Steam happily bans accounts that make chargebacks, so it's apparently legal (or at least get-away-with-it-able) in the US. I'm really not willing to take that risk with Amazon.
It doesn't in the EU. If Amazon wants to ban you, they can ban you from buying new content or using online interaction functionality, but all existing content has to stay accessible.
