Why? Standards harmonization has big upsides too.
For example, the EU PPE safety standards are so good that there aren't even North American equivalents for many products.
If you buy a climbing carabiner in the US, it's being tested according to a test procedure defined by the same EU bureaucracy you deride.
What's the electrical failure rate of every appliance in your home, and the associated risk of death by electrocution? If you don't know offhand, it might be that you are implicitly relying on UL standards to keep you safe and whole.
Consumers don't have perfect information, so the risk is asymmetric. If you assume the market will sort out risk and quality so we don't need standards and enforcement thereof, I don't believe your model is aligned with reality.
What do you see as the main safety differences between Lightning and USB-C? As both systems have been in use at scale for some time now, this should be easy enough to answer quantitatively.
My understanding is that they offer equivalent safety, in spite of Lightning not having been standardized by the EU, but I may be wrong.
USB for small devices like phones has gone: Proprietary -> Mini -> Micro -> USB-C
In the same timespan apple has gone: 30-pin -> Lightning
Proof: look at all the craptastic companies that sell ersatz products on Amazon. For some kinds of products they can be almost as good as much more expensive offerings, for others you might get a great deal or you might get an explosive paperweight.