Okay re: the question Is the end of Boomtown near?
Price is going up but this is proportional to the cost of the festival and the anticipated amount of ticket sales. There will be lots of forward planning at Boom town HQ to make sure it doesn't go under and it would take something catastrophic to rock the boat that much.
Sure Glastonbury is big competition for Boom town, but Glastonbury is sold out. Where are the festival laypeople going to go for their hedonistic summer time pursuits? Here we have two types of laypeople the Reading Graduates and undergraduates. First festival ever? please see Reading. Reading graduate? you'll probably be more open to alternatives. Hence we have a lot of people gravitating to Boomtown. Moreover Glastonbury's audience is a lot older than Boom's. A lot of my (young) friends don't even know who The Cure are and think Stormzy sucks (Lol yh grime is 4 kidz and a ---> thinking booking SMILING EMOJI) so have no interest in the Glastonbury or it's chin stroke allure.
Boomtown's musical repertoire is probably way off course from its inception but this is deliberate, young people like getting fucked up on pingers and ket to fast and repetitive beats, so boomtown (indirectly) sells its tickets by providing the opportunity to do this.
Over zealous security? More like lazy horses not being woken up by a hordes of pilled up wasps. Compared to most festivals Boomtown's security is inadequate. Sure they check you on the way in but that's standard at most festivals. Also Boomtown is one of very few large festivals with nothing separating arena and camping. This is all surplus to the point, festivals are dangerous places. Security is a blessing and keep us safe.
I guess repeat attendance is one big ticket seller for Boom-town and yes if you do the same thing over and over it can get boring. That said Boomtown is constantly changing and at a rapid rate. Last year we had the new Punk area opening up ticket revenue from punks. This year we have more techno than ever before opening up ticket revenue from even more people.
Also consider Boomtown in the context of other british dance festivals main competitors include creamfields, WeAreFSTVL, SW4 and elrow. Elrow is the only real competitor with boom here. The others are glitter fests.
TL;DR - No Boomtown isn't dying