A health care industry group on Thursday launched a digital ad campaign against Medicare for All, as health care companies ramp up their efforts to fight the idea gaining ground on the left. “Whether it’s called Medicare for All, single-payer or a public option, a one-size-fits-all health care system will mean all Americans have less choice and control over their doctors, treatments and coverage,” states the two-and-a-half minute video, which will run as a digital ad on Facebook, Twitter and YouTube.