I don't know about that... Mobile is facing its own challenges right now, like spectrum. No different to IPC if you ask me.
The fact that TV operators are so slow to move over DTTV is also hindering mobile operators because they're waiting for that spectrum to be freed up and in the mean time they're left with nothing else to do but re-farm already available spectrum.
There are definitely a lot of challenges, and I don't think DSL has one foot in the grave by any means. But the growth on mobile is pretty much over 10 times that of DSL, so it's a huge market for broadband.