Someone disappointing (but unsurprising) press statement from Orange.
Orange used to be quite a fun and quirky company, the sort of company who would want people developing interesting apps for their devices.
I guess part of the problem is not so much people rooting devices and swapping ROMS, but more the mad rush of people who want to buy the device on PAYG and then unlock them.. read though the threads on here, and very few people are planning on sticking with Orange.
Telcos these days are not really in the mobile phone business, they all see themselves as 'content providers', they lower the barrier to entry, and make a killing with the monthly charges ,and then all the 'value add' services they push towards you, all those plans and features that are designed to make the telco money.. selling phones, running a Radio network, all that stuff is just a byproduct of providing you a gateway tho their real products.
So really, think about it from Orange's point of view, they have no interested in helping people who will not become customers.