Dude, the license here is the stake you purchase, that is your capital investment. The license gives you a right (what do you mean legal, I thought crypto currencies don't require a legal permission to operate?) to take part in the staking process, the stake is your mining rig except it's 'virtual' not physical, these PoS tokens you purchase is now your uninflatable intellectual property that secures the blockchain. Come on, that's easy enough to understand, don't pretend you don't get it