The agreement doesn't need to be unanimous. And it's fine for the agreement to be "just use whatever the latest small form factor USB collector is" which has been the de facto Android standard since the beginning.

It sounds like you're arguing that the lowest common denominator phone manufacturer will be holding up progress. But the connector is the easiest part, especially if it's a truly ubiquitous standard, because it will be heavily commoditized. The lowest common denominator phone manufacturer will just buy whatever the cheapest connector from China is, and this will almost always be whatever connector is most common.

My argument is that charging is at this point a mature technology, we have a charging standard up to 100w. Do you expect future phones to draw more? What possible improvements could future charging standard have, as far as a mobile phone goes?

And yes, it is pretty normal to have manufacturers sit round a table and agree standards -most ports on a computer, 4g wireless, etc.

You cant even come up with your own phone communication standard - countries allocate frequency specifically for 4g or 5g, none will give you a frequency band for a proprietary communication standard.

Apple can still implement proprietary technology in an USB-C charging cable that allows their phones to be charged much faster than others, as long as their device can still be charged by a generic cable and vice versa (without the added benefits).