Although I never made an argument regarding free speech we can say that this does prevent free speech because it prevents companies from speaking about their products through advertisements. Remember that business owners are people too. Often times they're citizens of the countries in which they're doing business.

I think most people tend to forget that and view companies as soulless abstract entities. In the US 99.9% (99.8% in the UK) of businesses are small businesses run by very few individuals who are just trying to make ends meet. If you remove the ability to advertise these products it doesn't hurt the big companies. They're established and have recognizable brands. But small businesses can't afford to lose their main way of finding customers. Eventually, they go out of business. This only helps the large corporations become even larger.

> There's an imbalance between the power of the big corporations and the power of the individuals...

Where is the imbalance of power in the scenario of burgers being advertised? All advertisement is designed to persuade the viewer to purchase the product or service. Marketing is a normal part of running a business. Children may be influenced by the commercials but so are adults. Should we ban all advertising now?

> - burgers cause public health issues that harm the individuals, and cost greatly to the society in healthcare

While burgers may not be the healthiest food, if you're a low income individual who can't access more expensive, healthier foods, burgers are nutrient and calorically rich and they're cheap.

A burger to someone living below the poverty line without access to food is a life saver. Its all about context and perspective.