On the latter point, who says we are? For many people especially in rural areas public transport is largely an irrelevance, and likely always will be. And it isn’t just rural areas, local to me there’s housing developments going up right left and centre on the outskirts or towns and in villages, which are essentially 100% reliant on residents having one or more cars. There doesn’t seem to be any strategy by anyone to create an actually functional country, so it’s hard to see why road users should bear a brunt of this.
Just thinking round here, if there was actually a desire to create a serious modal shift, you’d be wanting to re-open lines like Hatfield to St Albans Abbey, Welwyn to Dunstable, Hitchin to Bedford and posssibly even Welwyn to Hertford, all of which would need a frequency essentially allowing turn up and go usage (so at least every 30 mins). This isn’t going to happen for numerous reasons, so that being the case forget any pretence of the primary mode of transport for people being anything other than the private car.