This I think is one of the places where smaller technical differences make things legitimately different. I'm not coming from the side of "it shouldn't be allowed" or "it must absolutely be allowed like physical goods".
Second hand items are often
* Lower quality, as they've been used
* Lack consumer protections
The first just doesn't apply to digital goods and the second is much more minor (not expecting technical faults to become apparent after a while owning a digital item).
Selling physical goods also has a reasonable time commitment to it, you have to physically move things - there's friction. Digital goods could be sold between regular people near instantaneously. Buying a DVD and selling it after watching is do-able but still some work. Buying a film second hand the moment I press play and selling it on a market straight away after I stop watching seems trivial. I know this is ~rental, but theoretically users only need to buy in total enough copies for the concurrent number of watchers. A big enough market and this could impact how things are released, a "watch anytime" vs a "you really need to be up to date (e.g. sports)" would make a vast difference in total required copies floating around.
The resale value impacts the price you can sell at too. If a customer knows they can easily sell an item for 80% of what they bought it for, they're likely to be willing to pay more for it. However the customer also takes on more risk.
It feels like such a small change, but I can see it making a very large difference.
I'd say this goes both ways. It's vastly easier and frictionless to sell content. It could and should also be easy to re-sell this content - it's only fair that both seller and buyer benefit from the properties of digital content.
Second hand items are often
* Lower quality, as they've been used * Lack consumer protections
The first just doesn't apply to digital goods and the second is much more minor (not expecting technical faults to become apparent after a while owning a digital item).
Selling physical goods also has a reasonable time commitment to it, you have to physically move things - there's friction. Digital goods could be sold between regular people near instantaneously. Buying a DVD and selling it after watching is do-able but still some work. Buying a film second hand the moment I press play and selling it on a market straight away after I stop watching seems trivial. I know this is ~rental, but theoretically users only need to buy in total enough copies for the concurrent number of watchers. A big enough market and this could impact how things are released, a "watch anytime" vs a "you really need to be up to date (e.g. sports)" would make a vast difference in total required copies floating around.
The resale value impacts the price you can sell at too. If a customer knows they can easily sell an item for 80% of what they bought it for, they're likely to be willing to pay more for it. However the customer also takes on more risk.
It feels like such a small change, but I can see it making a very large difference.