A government full of Democrats would rather have you be a Republican, and a government full of Republicans would rather have you be a Democrat, than have you oppose both. ↗
Their Internet usage is growing very rapidly, and even they can do the math: If everyone in China needed an IPv4 address - just one - this country would use up one third of the entire public IP address space. ↗
What is special about VOIP is that it's just another thing you can do on the Internet, whereas it is the only thing - or nearly the only thing with the exception of the dial-up modem and fax - that you can do on the public switched telephone network. ↗