Why was Golden Rice not successful?

Could you please elaborate on the reasons behind the lack of success for Golden Rice? I'm particularly interested in understanding the challenges encountered in its development and deployment, as well as the potential reasons why it hasn't gained widespread acceptance or usage. Could there be any regulatory issues, public perception barriers, or technological limitations that might have contributed to its failure? It would be helpful to gain a deeper understanding of these factors in order to assess the feasibility of similar projects in the future.