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Things like railway gauges are components of a large-scale national network.

That is not true of a device connector, which only has to work between the device and the power brick.




With a standard connector one can have standardised power bricks too, which may eventually lead to no need for power bricks at all.


But we already have that. The power brick almost always has a USB connector on it nowadays (even with Apple), and it didn't require setting up a perpetual committee of bureaucrats to feed at the public trough.


As others have noted, this was in large part due to the European Commission’s common external power supply initiative back in 2009, and similar standards in Asia.


Others may have "noted" that, but it doesn't make it true. In fact, the EU common external power supply does NOT require a USB connection on the power brick. It be hardwired ("captive", in their terminology).




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