From what I’ve understood of the white paper, there’s no transaction fee because, instead of rewarding active nodes like in the blockchain, the Tangle punishes inactive nodes. So when a node performes few transactions, other nodes tends to disconnect from it and in the long run an inactive node will be dropped entirely.
On the other hand, a node has only a partial copy of the entire Tangle at each time, so it is possible to keep it small even when the total volume is large.
Economically, I don’t know if switching from incentives to partecipate to punishments for leaving makes sense.
From what I’ve understood of the white paper, there’s no transaction fee because, instead of rewarding active nodes like in the blockchain, the Tangle punishes inactive nodes. So when a node performes few transactions, other nodes tends to disconnect from it and in the long run an inactive node will be dropped entirely.
On the other hand, a node has only a partial copy of the entire Tangle at each time, so it is possible to keep it small even when the total volume is large.
Economically, I don’t know if switching from incentives to partecipate to punishments for leaving makes sense.