As i suggest, it was not primarily about speed, although that was important, but about capacity. I also think that leaving Liverpool off the original route was a mistake, and made it end up looking like it was all just about getting to and from London more quickly.
Liverpool, where I live, has a serious shortage of capacity, and needs new capacity and new lines in order to reconnect it to other cities that it has lost direct connections to over the years. Reform has suggested it doesn't see improved rail pathways in the north as being very important.
As I say, every major country in Europe has a high speed network and a transport system that is far more efficient, cheap and effective than we have here. We don't seem to be able to build infrastructure anymore......which is a sorry tale considering Britain ws the home of the first railways.
My son lives in Barcelona, and whilst Spain already has high speed rail, they are now building a new high speed station in his neighbourhood - which is expected to give it a big economic boost. High speed networks also, if planned properly, have the potential to connect the rest of Britain to the European network.