I mean there's definitely people who go bankrupt due to not being able to work due to illness. If you're a private entrepreneur (or what's the correct term E; self-employed was what I meant) for example then that stuff can take you down easily.
Yes, that's true. Many countries have subsidies, but especially if it's a significant one who needs constant care, they can't cover everything.
Still, likely a rounding error compared with the US if we consider those who become unable to work due to treatable conditions they can't afford (and their insurance delays, denies and defends)
It's also that if you get sick at the wrong time, as a self-employed person, that alone can take you down and cause a bankruptcy. Subsidies won't help there if the work just isn't getting done or you miss out on work contracts.
If you're self-employed entrepreneur then it'd be a personal bankruptcy most of the time in Finland. Having an LLC or such thing for such use isn't common.