[Question] Buy Nothing Day is a great idea with a terrible app— why has nobody built a killer app for crowdsourced ‘effective communism’ yet?

I’ve been seeing a lot of people really excited about very leftist ideas on TikTok lately, as well as being very frustrated at the way that the ‘developed’ world exists, and I keep getting this idea of an app that would finally create some sort of framework for the average person to produce mutual aid.

The basic idea is that you could list things that you want to share. Other people can list things they need. The only limits would be, officially, no prepared foods, for legal reasons, and maybe other things that I haven’t forseen. And that would be it! An app to share things you have extra of, with your neighbors.

So, that’s been stewing around in my mind for a little bit, and then today, what do you know? I discover that ‘Buy Nothing Day’, a movement around the idea of a day where nobody buys anything, has an app like this! And it has existed for two years! But it sucks. All the reviews claim that basic functionality like making posts is busted despite praising the idea.

And my question is ultimately this: why has there not been a version of this sort of thing yet? Have economic conditions simply not been bad enough for people to want to help and rely on their neighbors?

Did craigslist pave the way despite becoming a cesspool of overly expensive crap and deceptively listed ‘$1’ ads for businesses, that require you to drive 8 miles to pick it up while someone side-eyes you suspiciously from their driveway and waits for the venmo to go through?

Is this idea not sustainable or good in some way I’m missing? It seems like a no brainer to me and nothing but a public good. People could point to some theoretical stranger danger, but that just seems like razorblades-in-halloween-candyesque fearmongering.