Lina Khan is fighting for regulations that favor Middle Class Americans, not corporations and the uber-rich execs and Wall Streeters who own the stocks.
A strong middle class is good for America, and paying $150/yr for inhalers vs $2000 frees up a shit-ton of cash for these folks to spend on local goods and services vs lining the pockets of already wealthy corporations and rich folks (they'd pay <$30 if they could get them from France).
This is not difficult to understand; what IS difficult to understand are thousands of Americans who vote against their own interests, because they are so easily brainwashed by propaganda.