[TheCapeGreek]

I don't particularly agree with the delivery suggestion. Basically a volunteer UberEATS style delivery with bicycles? To say this is ambitious is an understatement. Bicycles are not nearly as used as you'd think, and decentralized delivery with volunteers will probably raise the cost of delivery (effort/petrol/time) as well as no one would actually trust this. So, suggesting a local delivery service would be more ideal, but that again is a pretty lofty goal with the amount of local options. So I suspect this will end up querying a few well known delivery services if they are available in the customer's country, and give a rough estimate of that cost.

Next, expecting the stores to bear the brunt of the store power also brings into question the technical knowledge of the store management. You'd need dedicated personnel for this since most people wouldn't know any of this. And granted, people who have the relevant knowledge to host and maintain the instance wouldn't be working in a store most likely anyway.

All that being said I don't want to complain too much. I like the idea but as it has been submitted there are a lot of practical holes in it considering the "market" it would best serve (areas not already touched by long ecommerce giant fingers) not having the necessary knowledge and infrastructure. Personally I'd suggest taking a look at how other popular decentralized systems work and seeing how ecommerce would fit into that (mainly, Mastodon).