The Affordable Care Act was passed while I was working in a public healthcare system, and it did address some of these issues.
I was able to get people screening tests like colonoscopies without the year-long wait that had become commonplace.The expanded coverage allowed patients to get timely imaging studies, like MRIs, and surgeries for conditions that had originally been deemed elective and not covered but that severely impacted the quality of life.
I saw many new, young patients and was able to introduce them to preventive medicine, which saves lives and reduces future healthcare costs.