5. Why mobile companies concern about the mobile VoIP service?

When the commercial mobile VoIP service is launched, telecom companies would have fatal losses in their business. Because the price would be much more cheaper than we now pay. Of course, there is wired internet service case which is still safe for voice business for telecom company. But business environment would be changed rapidly, and nobody knows telecom industry’s future. May be, voice would be free and variety data services would be offered with variety prices plan in the future.