If I’m not mistaken acrylic molds (thermoplastic) can be reprocessed completely.
On topic, decentralization also in practical sense means that noone is taking on full responsibility. Until someone brands the system, and guess what, you will have to carry all the responsibilities over everything happening in the entire network. That is the complexity of it.
My 2 cents is to rather than focusing on a specific production method, focus on a specific niche audience and maximizing brand loyalty.
‘Thinking big’ works less well for decentralized systems where development is mostly ground up.