Banning IP leasing would concentrate power in the hands of those who have large IP blocks. Makes one wonder what the real motivation behind this post is.
Who do you think is doing the leasing? People who have no IP space?
RIPE wont "sell" me an IP block, no matter how reasonable a price I offer. RIPE will gladly let me pay them LIR annual membership dues for 2 years before they consider allocating me a /24 (based on current waiting list times)
But in my RIR I don't think there's a 2 year minimum.
Regarding IPv6 blocks do those require a 2 year membership as well? They are probably easier to get.
So I guess I’m having trouble envisioning a world without IP leasing that’s materially worse than the one we have.