Digital goods are always in perfect condition and can be trivially resold, while reselling physical goods takes way more effort, is mostly semi-locally restrict

Digital goods are always in perfect condition and can be trivially resold, while reselling physical goods takes way more effort, is mostly semi-locally restricted and the good gets damaged after usage. e.g. if some guy from the other side of the world wants to sell their physical book to you, it's very likely cheaper, faster and more convenient to just buy a new copy. It's like the difference between e-mail and mail. It's conceptually the same, but the lack of barrier causes it to behave completely differently.