Because you want to have competition to drive down the price. You want innovation. You have the ability to get people to agree that it's worth having a public plan. You could get private insurers to cover this population, but you couldn't without giving the population leverage in the marketplace.

因为你想要有竞争来压低价格。你想要创新。你有能力让人们同意有一个公共计划是值得的。你可以让私人保险公司为这些人提供保险，但如果不让这些人在市场上发挥杠杆作用，你就无法做到这一点。