(Yes it's a complicated problem, you can't liquidate wealth like that, and obviously dropping two hundred K into everyone's bank account would probably create some weird issues. But that's a high-level overview of the problem.)
[1] https://en.wikipedia.org/wiki/File:US_Wealth_Inequality_-_v2...
[2] $60,000,000,000,000 / 300,000,000 people == $200,000 per person.
Also, one way to address the issues is to get everyone to be wealthier. "Why can't you just be richer?" seems like a weird thing to say but this is exactly what has happened over the last 100 years or so (at least for most of the world's population). This has solved many things that used to be problems but created new problems of its own.
Would a solution that makes the bottom 90% better able to afford healthcare but makes the top 10% even richer be a good thing? If not, why not?