Hospitals are not paid in FULL in cash at the start of the ground breaking. There are loans, bonds donations etc. I am sure Unions like the National Nurse United with their 185,000 members all paying $40 in union dues every 2 weeks could muster up such funds.
Where I am from union dues range around $40-$50 every two weeks.
Assuming nurses can afford to pay $40 every 2 weeks multiplied by 185,000 nurses= $7,400,000
$7,400,000 every two weeks X 2 pay periods in one month= $14,800,000 monthly dues
$14,800,000 monthly dues X 12 months= $177,600,000 a year in member dues collected.
Obviously these numbers are very very rudimentary. What I am trying to show is that there is potential to collect a large sum of funds to attract other sources of investment to build such a "Union Hospital".