Construction is private and buildings don't fall down and are incredibly safe. Food production is private and people don't get spoiled or poisonous products. I think this is reductive.
The argument by the parent is clearly not against regulations in a market economy, they didn't say anything implying that. The argument is against the necessity of government ownership and operation.
I'm quite sure that this still happens only to lesser extents. Compare European food regulations to U.S. food regulations. American food while not explicitly killing people outright still has some ghosts in its past that are present in today's foods. See the Coca-Cola, Sugar companies, and 'fat-free' corporate lobbying of the FDA, as well as the huge advertising for terrible food has affected Americans.
The U.S. has food deserts, where fresh produce and food is either too expensive or impossible to find with substitutes being boxed goods laden with sugar and grains from the whale of corporations like General Mills and Kellogs.