For USB chargers industry had come up with a good solution but market failure meant there was no incentive to adopt it. That's text book regulation stuff. Here there doesn't seem to be a good proven solution out there that you could mandate...
for example just a few days (week) ago there was a thread about how Logitech wireless stuff and wireless headphones interfere.
sure, it's hard to point to a singular root cause (Logitech emits too much, or headphones are ill-designed and BT is simply not the right tool for this because this or that)
but there are clear software (firmware, drivers, kernel) failures, that stem from simply releasing absolute garbage. (and every layer just coding for the happy path.)
I have three sets of bluetooth headphones that I use on a rotating basis daily with my logitech bluetooth mouse and keyboard, and they are all dead reliable... well dead reliable for bluetooth devices
When did this happen ?
/s
And even in the pre-smartphone days, phone chargers always worked reliably. Phone charging is and was the complete opposite of what bluetooth is today.
No, it's like phone chargers before EU regulators stepped in.