Appreciate that, but vast swathes of the North and rural areas will never be profitable. As a result, entire areas of the country have rolling stock that was supposed to be dropped in the 80s, a couple of services a day, or aren't even electrified.
The one that always stands out to me is the fact that the last train from Liverpool to Sheffield (two major cities) is at 9:30pm because it wasn't profitable to continue services after that time. As a result, flight delays from Liverpool Airport (again, a major airport) can leave you stranded in that city – or facing an eye watering taxi bill.