> Because it erodes trust in the platform, obviously. Would you buy something from a website if you were concerned it might be counterfeit?

It just seems like it'd lead to exactly this kind of effect (quoting another user from above):

> I frequently purchase from Amazon, and haven't(to my knowledge) received counterfeit goods. Generally I stick to "fufilled by Amazon" or otherwise first-party sellers, so that may have something to do with it.

Trust in the platform entails "the buttons worked as expected (i.e. didn't glitch me out of my money)". Trust in the product and sellers can be eroded, but that just makes it more likely that users would next time look for more trustworthy sellers.

I suppose you meant a trust in the ecosystem, but that wouldn't necessarily be eroded either as people would tend to assume that as long as you're smart about it you're fine. (e.g. people get mugged in shady alleys, but this doesn't erode trust in city living - people just learn not to go down those alleys.)