Hi folks! I'm here with another idea. Let's make an amazon alternative. I know! I know! That was asked for a couple times already but lets discuss some details.

Amazon is basically glorified dropshipping by now. What if we just made federated (not sure if over activitypub would work) ads and sales, powered by fediseer (the "trust" network of the fediverse).

Example 1: So you buy at toms groceries, you trust them. they have experience with tina's hardware store and they trust them. so you can buy both toms and tinas wares on both sites.

Example 2: So for example, I run a small business that sells computers. You run a small business that sells mice and keyboards. I have worked with you before so I mark you as trusted in my local website, which federates with yours, showing your products in my shop. If a customer buys my computer and buys your keyboard on top, my site sends you a buy order with customer address and payment. I get a small fee for my electricity of say 1%.

Can someone try and poke holes in this idea? It feels like this could work!

Have a nice weekend.

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[–] ChairmanMeow@programming.dev 10 points 8 hours ago (1 children)

I work in the IT department for a fairly large payment service provider. I can tell you now that you seem to be vastly underestimating both the financial aspect of this as well as several legal aspects.

Federation would almost certainly have to be opt-in rather than opt-out. I don't think you're going to pass KYC checks for any PSP if it's opt-out, the risk of someone (ever so briefly) selling illegal goods through your website is too great otherwise. Stripe would just shut down your account (if they even let you open it), PayPal probably won't let you open it at all.
Selling goods from other sites through your own, makes you liable for any returns, warranty claims etc... Simply "passing these on" isn't going to cut it. If the other site disagrees with the customer claim, you are on the hook for it, because it was sold through your website.
The financial logistics aspect here is really complex. If you're going to process payments on behalf of another site, you have to deal with reconciliation. After reconciliation you have to the send the money to the other shop, incurring additional (sometimes surprisingly sizeable) fees. And coming from someone who deals with (automated) reconciliation on a daily basis, every payment method does it differently and they all find extremely creative ways to mess up your systems. And that includes unannounced changes, mistakes, random unexplained fees, failure to deliver settlement files, etc...
How do you deal with the risk of scam instances? E.g. instance A tells instance B that a product was sold and the payment was processed. B sends it out, but it turns out the customer was the owner of A, and there was no payment at all. B just lost a product with very little chance of getting it back.
Then there's practical aspects. How do you deduplicate products in search? Or will you have dozens of listings for the exact same product?

The only remotely viable way I see this working is if only search is actually federated. Once you are on a product page, you can only pay using the payment page of the instance that has the product. You won't be able to pay for products of multiple instances at once, and you might lose some unified styling. But at least that approach has a chance of passing KYC and deals with all the legal issues regarding returns/warranties etc..., and it reduces the scam risk because you're in charge of your own payments. But at that point, you've only federated product search and nothing else, and then as a consumer you might as well just Google it instead.

I appreciate you have experience in running a business, but running a marketplace, especially a very complicated one, is really not like running a usual business.

[–] haui_lemmy@lemmy.giftedmc.com 1 points 6 hours ago

This is incredibly valuable advice! Thank you so much!

My current stance on federation is of course opt in and requires the main seller to trust the downstream vendors.

The main point is that this already happens for a large portion of thing you can buy. I sell computers and adjacent services, classical system integration if you will. Of course I have to buy the systems from vendors and resell them to my customers.

Many system integrators have shops where some of them rely on custom integration of vendor apis. Take minecraft server sites for example that have an automated integration with a hosting company's api (eg hetzner). you as a customer just order a server, their automation makes the order processing with hetzner and provisions the server for you.

Now make this over a non custom but standardized api, eg activity pub.

I might still be overlooking stuff but from a technical standpoint this should be doable. The legal aspect is interesting, although I think this could be done similar to already existing resellers.

Feel free to point out flaws obvious to you. I appreciate your feedback massively.