It's not even my country. My point was regulations like these (not this particular one, in general) cripple innovation.

Regulations should be there for safety related issues, not company's designs and own policies.

It doesn’t answer my question though. What do we get, as member of a society, if one or two companies get to be huge and become monopolies? What’s the societal benefit of that?

I also don’t think regulations like these cripple innovation. They make it harder to compete against more unregulated markets, that’s for sure, but I don’t think that’s a bad thing overall.

Honestly, I'm a bit more regulation-friendly than you, I remember the whole 2000-2010 decade where you had one charger per phone, in a house with 4 people, some with work phone, all incompatible. The switch to one, maybe two kinds of charger was a clear improvement.