Eco-friendly alternatives often cost more to produce. For example, paper and glass packaging require more energy, higher raw material costs, and specialized machiner https://www.quora.com/What-are-the-biggest-challenges-in-switching-from-plastic-to-more-eco-friendly-packaging-options-like-glass-or-paper/answer/Coherent-Market-Insights-1?ch=10&oid=1477743873487594&share=e5449b22&srid=uTm6RG&target_type=answer