Yes, but classically insurance wouldn't allow a guaranteed bad bet in. Health care is way worse then the classic 80/20 (20% of the people generate 80% of the costs). Pruning even just a fraction of these ultra high cost humans massively reduces the cost for everyone else which is what insurance companies used to do before the government stepped in.

(I mean a lot of this discussion is fucked because healthcare is literally your life but the point still stands)

The 20% of the people are likely to include nearly 100% of the population over time.

With socialised health care you don't just avoid the corporate tax of insurer profiteering, you're saving money in return for access to care when you need it.

Because - sooner or later - you will.