Ok, so since 2009 everyone except Apple was on USB.
No, because there were many other manufacturers.
2009 is when the EU stepped in. They didn't have to set it into law because the industry agreed to it voluntarily except for Apple.
"industry agreed to it voluntarily"
China before eu(~1-2y) forces usb chargers. and industry had choice, make special version for them or not.
Thankfully that EU initiative failed. They wanted the industry to adopt micro-usb as the standard, which would have sucked and would be worse than the situation today
How was getting all manufacturers to agree a "failure"?
The EU charger mandate required USB if USB was sufficient, IIRC apple managed to continue using lightning connectors b arguing that USB standards of the time where not enough for the iPhone.
Is the situation today not 'everything is micro-usb, usb-c, or apple'?