Firstly - Orange do this every year, last year it was a personal mini turbine on selected tents to charge your phone and the year before it was a pop up beacon that you could txt to find your tent. Both devices were "to be available commercially", I can't see them anywhere though...
As for all of the 'it was better in my day' lot. I for one thank the organisers, whoever they are for:
Securing the site - no more getting murdered by knife wielding scallies cutting your tent open.
Dealing with the travellers, who acted like they owned the place, (because they lived on the road and it was somehow their festival), while treating everyone who actually paid to get into the festival like shit. I believe Mr Evis said that they were "taking the piss out of his hospitality"
Pumping hundreds of thousands of pounds of investment money into the site to prevent the flooding that has happened two years ago. You don't see fiddler doing that at Reading do you? (NB: Last year there was more rain than the year before and no flooding)
Pumping millions into the local community.
Making sure that there is proper food onsite.
Stopping the ticket touting.
Not listening to those miserable fuckers who said that you can't put Jay-Z on mainstage because it's not Glastonbury. Snobs.
And last, but mostly for giving an inceredible wedge of cash to Oxfam.
There are many other reasons, I'm sure...