[jerojero]

USB C comes to mind. I think that's an example of a successful regulatory measure.

What will happen with the DMA is still to be seen. So I wouldn't judge it until we've seen if the intended effects of the regulation come to pass.

[kj99]

USB c hardly makes a dramatic difference to consumer choice, not that it’s bad.

[jacknews]

You obviously don't remember the situation with mobile phone chargers before the EU mandated usb charging.

Every manufacturer had a prorietary connector, voltage etc. Even different models from the same manufacturer often had different charging standards. Complete wasteful mayhem.