Alternatives to oil based plastics have been developed for decades, sometimes with oil industries support. But astonishingly enough, we still burn oil for making unhealthy and unsustainable containers. I wonder what is that force that is pushing us backwards every time we try to tame oil industries.
That is a really bad argument.
Bio-plastic will definitely be degraded in decades, hundreds or thousands years while we are still wondering if it will ever happen to petrol based plastic (while it goes up in the clouds).
Time scale is clearly an issue with your statement (that is repeated over and over).
Oh I got it: corruption!