Not with the ACA... now if you retire and only have income you draw from your investments, you pay a low income based rate even though you may have significant assets.
Yeah, I think ACA is a huge supporter of this kind of move... although I planned to get an exchange plan, I ended up marrying a member of the US Navy, so I get covered by Tricare. I know, not everyone has that luck (or lots of other luck I enjoyed)...
This is a natural outcome of conflating 'wealthy' with 'high income.' Outside of FAFSA, and estate tax, and maybe FDIC limits, the US government really doesn't have a good view into what assets you may have.