Your terms seem eminently reasonable and way more generous than I would be.
Also you mean people PAY to play minecraft on other peoples servers? There are hundreds of servers out there and it is fairly easy to stand up your own.
Reminds me of my neighbor who got all bent out of shape that the 'forest' behind their house was getting clear cut for another neighborhood. 'we PAID EXTRA for a forest how much did you pay for it?' 'I didnt pay anything like that. How much did you pay?' 'about 5000 dollars' 'did you get the deed to the land?' 'nooooo it was just assumed' 'weeeelll I aint no lawyer but I would say you got screwed'.