Is this so they can be slow in updating as well
This has a feel of the X10 saga, where o2 seem to be the last to release the 2.1 update. With a phone like the play, a completely unbranded phone would be a better choice, than one that has been fiddled with by the network, especially as SE are going to alow more freedom with the boot loader, which I'm sure o2 or the other mobile providers will not like.