If a country removes all restrictions on distancing, masks and testing, the unvaccinated cohort, if subsequently infected, will suffer the same proportional fate that we see now: about 2% die, about 30% have some long tern ill effects, and some fraction of those have a disability. The same bleak outlook that informed our response a year ago remains in play, although with a reduced rate of infection.
I have a few problems with people choosing not to immunised.:They will all eventually burden the health care system to one degree or another. Some will eventually burden the long term care system. Some (after the inevitable sporadic infections) will prevent reliable freedom of movement across borders because of the predictable political response. There will be the attendant economic losses in the travel and hospitality industries that will go unpunished. The subset of the population that is unvaccinated will become a political constituency that may shape policy to the detriment of the greater good. The degree of herd immunity we will accept must must must reflect the degree of vaccine uptake that the will demand of our neighbours. If we as a nation demand a 100% covid safe life then we must demand of each other a 100% immunity. Same as polio, same as small pox. The cost may end up being ten lives lost. The individual risks remain tiny, and should be discussed that way. Few people seem able (or schooled) to perceive risk or chance accurately.