I don't think this is as black and white an issue as it may seem, because sometimes you do need bottled water when your municipal water supply is impure. Here in Los Angeles they now "purify" our water with a compound called chloramine, which is a mixture of chlorine and ammonia, instead of straight chlorine.
Chloramine is very corrosive to water pipes in homes (think Flint), to water infrastructure like water treatment plants, city pipes, and water mains, and to appliances like washing machines, water heaters, and dishwashers. It is harmful when inhaled, especially when it is heated, as it is when taking a shower or washing dishes, and it can cause severe skin irritation in some people who are allergic to it. It does not clean the water as well as chlorine, and unlike chlorine, it is almost impossible to filter out of the water.
I now use only bottled spring water for drinking and cooking, and I have a friend who even bathes in it because of her sensitivity to chloramine. I have learned that there are better and safer ways to purify our water, but they are more expensive than chloramine, so they are not implemented.
Obviously, I am not in favor of corporations stealing our water and then selling it back to us, but there does have to be a way to get safe, clean water when we cannot trust our municipal water supply.