I can't say whether this is 100% true, but it most definitely would not surprise me. Any opportunity wasps get, they turn the screw. Some examples (just the ones I know about); astronomical charges for the electronic advertising boards around the pitch, trying to charge for use of scoreboard, quoting hundreds of £ each match to take down the wasps flags that cover a couple of the exits by singers corner/ away end. Then there was recently pie-gate in the corporate lounges. Like I say, any chance they get, they turn the screw.
I'm glad this has come out as this shows them for what they are - a bunch of snakes.