Only 4 things can happen.
(1) The venue scraps the booking fee and takes an extra £1 from the ticket price ... but the big acts wouldn't agree to that.
(2) The face value of the ticket price is increased to include the booking fee ... but then the artist would take a cut of the booking fee.
(3) Scrap the booking fee ... but then some venues would eventually be unable to it on acts, and there would be less music for us to see.
Or, and this is the biggest one ...
(4) Persuade everyone to sto using Spotify, and trying to download or dream free music, and buy CDs ... if the music business started making money again fro sales in high street record shops, it wouldn't be so important to squeeze out every last penny from live events.
Whooahh!! ... oops, sorry, I almost tripped, getting down off my soapbox.
:o)