Government regulation is not needed for manufacturers to think of manufacturing uniform bolts and nuts for various purposes. Private industry really can think of such things for themselves, based on market demand. Such things did exist before the government camels started sticking their noses under the tents.
But, hey, let everyone manufacture their own unique bolts with turns different from those on nuts, drive cars variously on the left or the right hand side of the road, enter into contracts with words whose meanings are found in everybody’s freely-chosen dictionary, because anything else would be communism and one-world government
Let’s see, we’ve meandered, haven’t we, from me saying it used to be that many EU regulations are innocuous and some are good, so that sovereign nations such as Norway and Switzerland routinely adopted them by unanimous vote or on a voice vote. But, nowadays, the constant flow of new regulations has become annoying if not down right intrusive.
At this point, you are insisting that everybody has the right to choose which side of the road to drive on. You seem to be simply contrary to whatever I say about RR gauge on the island of Ireland. I say, since it’s an island, what’s important is that it’s the same gauge throughout, not really whether it ties in with gauge elsewhere. To this you say, what if they build a tunnel. Shouldn’t they have standard gauge if they have a tunnel? Even forbid it’s a double track tunnel because your anarchist train companies will each decide whether to run their trains on the left or the right side.