The money ain't unlimited, there are plenty of surgeries, drugs etc that are available but can't be funded by the NHS. Particularly new/experimental treatments. In all countries with universal healthcare there is still a 2 tier system where the best care is still only available to those who can pay for private Drs etc. I'm not complaining tho, generally our nationalised healthcare is of a very good standard but there simply isn't the money/resources to provide everything to everyone. It's still a relief knowing that I won't go bankrupt if I get cancer or run over by a bus.