You look at the title and think that something good happened to actually get people to drink it less like maybe education or an increase in wages but nope.
Step 1: Healthy stuff is too expensive so people buy junk they can afford instead unless they want to take time (and in many cases cooking skills) they don't have preparing from scratch.
Step 2: Instead of making the healthy stuff cheaper so people can buy what they want instead of what they can afford, they instead make the junk food more expensive making sure the people have even less spending money...
Step 3: Profit for everyone but the consumers.