That's a great question. Have I uncovered evidence of the plastics industry solving it? We still have the problem, so I'm not sure it's been solved yet.
One of the issues is that the supply chain is diverse. It's not just the people who make the pellets. They have to work with the people who mould it into a product. That product has to be made in such a way that it's practically recyclable, meaning that if something is marketed to be colourful and beautiful, it doesn't recycle very well. Then we need to have that waste management infrastructure. I fully agree that we need to increase this. Then it needs to be recycled.
What we consider to be the most recoverable plastic is in PET water bottles. Right now, in Canada, we recycle 20% of PET. Why? It's not working, so we need a better full system. Single-use plastics bans seem to be, at least, reducing what we see in the environment, which is protecting wildlife. What we've banned so far isn't packaging. It's other items.