How about leaving it to private concerns whether or not they want to offer health care plans. They will find a place in the market, or they will be rejected in the market as uneconomical.
Remember, the whole idea of health care plans as we know them (before Obamacare) was a tax-exempt way of providing pay to employees. There are some efforts to support cash-based alternatives to this, with health care savings accounts, but they are hobbled up with cumbersome regulations. Those could be simplified.