Replying to sibling: that 30-pin connector predates the Memorandum. It's exactly such chargers that the EU wanted to regulate at the time. Every company had their own incompatible charger.
Samsung actually had done their own thing - their early tablet lineup also had a 30-pin connector, and of course incompatible with Apple's 30-pin connector.
Just to add a step: Samsung got pissed, and told the EU either regulate, or we do our own thing too like Apple.