But BT nationalisatioin isn't investment at all. It's buying something that needs investment. A bit like renting your car or buying it. If you rent it you save £20000 that you can spend on extras. If you spend your £20000 on the car you have no money to invest.
There isn't a money tree and the people and business Labour wish to punish at the top of it can and many will move elsewhere. Then you have to punish the masses, then you lose popularity and run out of money. You can borrow the £20000 to create an illusion of investment, but you have to pay interest just as you do on your rented car.
Just look at the SNP housing taxes which have killed off the sale of expensive houses and left a £50M funding gap. They also left tax allowances frozen and not increased for inflation, putting up taxes for middle and upper classes. No major businesses have moved here recently. Have you seen their popularity ratings.
North Sea oil has left a big funding gap as the price or oil and output has fallen maybe fracking can help boost the income, but till it does there is a lot of borrowing going on to maintain things we can't afford. The NHS is unsustainable without some limits. Do we pay £20m for one persons treatment, can people phone ambulances 8 times a day and expect them to come every time. In Scotland 2% yes 2% of the population occupy 75% of all NHS beds and consume 50% of the drug bill. This may be due to the lack of social care support i.e. No carers to keep them at home.
http://ihub.scot/a-z-programmes/lwic...duals/Overview
In Scotland, a very small proportion of the population uses half of the total hospital and prescribing budget. In fact:
2% of the population in Scotland used 50% of the hospital and community prescribing resource in 2012/13
This translates to 103,715 people using £2.6bn of the hospital and prescribing resources
The 2% of the population used 77% of inpatient bed days
This translates to 103,715 people using approximately 4.9m bed days (4.4m of these through unplanned admissions1)
There is potential for partnerships to gain a better understanding of how resources are used, and how services are interacted with, in their area, to better align services and improve pathways.
If only it were a case of throwing money at health sorry that's far too simplistic.