I haven't paid one cent to a telecom operator since the arrival of VOIP. Why pay for a telephone call when you can do it for free? I am sure its not going to help DT. What services is DT going to offer in the future? Large dividend is a not going to help them when the stock goes south. roaming will soon end too.
This is an interesting question. Since DT owns a lot of the wire that VOIP uses it seems that at some time in the future they will figure out how to charge for the use of internet for such purposes. What does everyone think? Also, SF and other cities will make the internet accessible citywide for free soon. Will they then have VOIP cell phones??
VOIP will certainly change the face of communications; however, in order to do VOIP, one needs internet access, which is provided by DT. DT sells all of the levels of access, which however you describe the problem is a requirement. The main threat is government intervention. In the US, this caused the breakup of AT&T, and then destroyed the profitability of the baby bells to the point that they have largely recombined into new behemoth companies. Germany had been heading down the Socialist path - pushing DT to lower all types of charges. The new government is a bit more conservative, so perhaps the pressure for the foreseeable future will reduce - at least until I get my nickle out.