I've written several times over the past few months about the confusion regarding how much of an impact on the private insurance industry the move to a universal, 100% publicly-financed single payer healthcare system would have.
Most recently I noted that not only would the latest versions of the House and Senate "MFA" bills expand their reach even further by adding in Long-Term Services & Support (thus legally denying private insurers yet another range of services that they'd be legally allowed to duplicate), but in an interview ahead of the rollout, Bernie Sanders himself stated point-blank that private health insurance companies would be "reduced to nose jobs" and the like (which is of course the whole point).