Often, the replacement will just be a derivative that isn't necessarily better. The narrative that will then go out through the media is: "We're no longer using this evil thing. Full stop." The replacement ends up just being something similar with similar problems. People stop paying attention because they assume the problem is solved, when it really isn't.
In the case of replacement for water bottle or food container plastics, the best answer is to just not using them anymore, although glass and metal have their own difficulties, namely fragility and weight.
I remember the horrible transition period of the terrible "energy saving" lightbulbs back when EU banned incandescent bulbs. Expensive, took minutes to warm up, had terrible colour rendition, filled with mercury and saved barely any energy. It felt like such a moronic decision.
Now with over 50 LED bulbs all using like a tenth of the energy they used to with lifespans so long I can't even remember when I last had to replace one, it feels totally worth it. Sometimes someone has to make you suffer before it gets better.
Though with chemicals in contact with food, hopefully they take it just a bit slower to make sure they are safe first.