People most certainly empathize with your situation and those of many others who are living with pain and any methods for pain management they can receive. You concern is understandable, the fear of being left high and dry with no facility to turn to for help.
But the article didn't infer about any effort to create a prohibition on methods of pain relief. No restrictions on how healthcare providers can address relieving pain was stated in the article. It's healthcare providers that administer your medical and healthcare needs and not the pharmaceutical industry. Indeed, it's the legal obligation of officers of those pharmaceutical companies to maximize their profits. To maximize their profits and not to maximize your health. This is true in virtually all walks of American society, and we suffer the consequences that flow from that.
You are entitled to protection, but as we know, many of our legislators, those elected officials, can be 'per$uaded'. It's those per$uaded legislators and big pharma, along with the PR firms they hire, that will manufacture the scare tactics aimed at people who are going through enough trouble and stress with their health situations as it is. There are the real honest and responsible people and then there are the exploiters. And that's virtually a capsulized account on why Bernie Sanders is running for president. Honesty, decency, accountability and responsibility in government and society and not exploitation.