Because there is not a general commitment to it. Why would there be? Nadhim Zahawi is a tax avoider. Rees-Mogg shifted his fund to Dublin to avoid tax. Sunak pays himself a multi-million pound income through a trust to avoid tax and declares his wife non-dom to do the same. How can it possibly be right that Rishi Sunak pays a smaller percentage of his income in tax than a nurse does?
Still, I have been clear about how it could be funded and what could be done. You seem a little lost, yourself. The reality is that some areas are better in public hands. When we look at what is needed as a nation, economic growth is written large. Proper pay and affordable housing would be such a shift towards that goal. Money in the pocket can be spent. Money desperately clawed from every corner of a purse just to get by cannot.