Just below the surface of 'superstar' trains all places have their workhorses that do the vast majority of the work.
We do not have the 'superstars' yet these are what our workhorses are often compared to. I have travelled on some rickety old stuff in Europe and the wider world, and by and large our mainline trains do a stellar job. Yes, they and the tracks could do with a bit of upgrading, and, yes, we could do with a few more services, but for the most part our rail services are up there with the best.
Compared to other places, inc mainland Europe, our major cities are close to each other. Big time savings between them are neither available nor necessary. Given the choice of saving seven minutes between Leeds and Manchester, or getting a seat on a comfortable train, I know which the majority would choose.