It looks like we agree on something. This is of course true but slightly defeatist; I don't think the towel should be thrown in just yet. There is a long way to go but I truly believe eventually the UK will catch up.
No, regardless of your ironic wit, part of the of levelling-out process, is that while some countries' standards of living will rise, others will fall, because to level out social and economic standards, this means that money will have to pour from the rich countries to the poor countries. The UK is one of the countries whose standard of living is falling and will fall much further. Already, councils cannot afford to repair potholes in the roads or mow verges so often. Roadside weeds in towns are increasing as are the numbers of homeless people. The NHS cannot cope with the numbers of patients and more and more are having to be treated privately. Schools are in meltdown and there has been a shortage of maths and science teachers for decades. There are not enough police on the streets and not enough prisons for offenders, who are increasingly being let off a jail sentence or having their sentence reduced to make room in the prisons. I've been living abroad for a decade and during that time, Britain has become more and more like a third-world country. Like watching your children grow up it's hard to notice the changes when you live among them daily. But if you didn't see your children for 10 years, you'd see an instant difference between the toddler you last saw and the developing adult before you now. The trouble is, while all these unnoticed changes are going on, councils are farting around with useless policies, such as expensive cycle lanes, when there are far more pressing problems that they should be addressing.