I think the Eurocrats did not "give in", they simply decided that the issue was not worth any more effort on their part, and they can let time now finish off the job within a generation or so.

After all, everyone below the age of about 30-35 has been taught the metric system at school, and today's 15 year olds are not about to start learning any other way. Neither (I think) are the mainly immigrant-origin cornershop keepers, at least not without an overwhelming demand from the customers, which I don't see coming. The supermarkets may, or may not, revert to a dual system on the packaging as a sop, but it costs money; and I don't think they'll change their scales. They don't have to. Ditto for the petrol garages.

So the system will eventually disappear of its own, with only perhaps the mile remaining on the road signage the longest, again for cost reasons. The Eurocrat's job is done - might as well appear open-minded and make friends now...