Hi there @cicisaja! The aim of the campaign is to awaken those big corporations to stop producing plastics specially single-use plastics. That is, they should find a different way of packaging their products in an environmental-friendly way. To me that does not mean people losing their jobs but just a change on what they do.
I used to work with Kraft (now Mondelez) and they have Research and Development team. This R&D team should be researching on stopping their non-biodegradable wastes. Yes, buy-back can be another option and that will mean these corporations will have to have a recycling facility. But I haven't heard of any large corporation having such facility. With the protests against them, let us hope they will realize doing so.
There was once when I cancelled all my grocery items when I forgot to bring my own bag and they are selling the eco-bag at what I thought was too much. But if we buy the eco-bag even at high price, it can be re-used over and over so the price will pay in the long run. That experience was a lesson learned for me. 😊

