It's what they are doing in Singapore.
I agree with it. The way I see it, our democratically elected Government decided that vaccines were the way out of this, and sank a great deal of our taxes into developing, procuring and administering those vaccines, which was a gamble that paid off - vaccines are far more economical than treating unvaccinated people.
If people want to choose to not avail themselves of the free vaccines available, then that's their choice and they can pay for the alternative.