> My view is that if the individual mandate is eliminated then other insurers will come into the market

That's absolutely incorrect. The individual mandate requires people purchase health insurance or face a penalty. This will do absolutely nothing to introduce additional insurers. The only thing it will achieve is increased premiums.

> The thing I've always hated about Obamacare was how healthy self employed folks are subsiding the unhealthy people

That's the core principle of insurance, taxes, and functional governments. Everyone contributes to the same pool even if they don't directly benefit from nor utilize every aspect.