One Third of the World's Households Have Broadband Access
The number of fixed broadband subscriber will approach 618.7 million by the end of this year, according to market research firm ABI Research.
North America has the highest penetration of fixed broadband, reaching 72.4 percent, followed by Western Europe with 72 percent. 44 percent of all broadband subscribers access the Internet with speeds of at least 10 Mbps.
Growth in the U.S. is still continuous as ABI estimates that DSL broadband subscription grew 1.2 percent in Q2 2012 over Q1 and added adding 4.3 million new subscribers. However, a much stronger growth opportunity is available in next-generation networks such as fiber optics, which is forecast to increase its market share of the overall broadband market from 12 percent in 2011 to 13.2 percent by the end of this year.

Ping is primarily dependant upon distance. You can't reduce the physical distance between places, so pings can only be lowered so much. And also keep in mind that the light doesn't travel from the host to server in a straight line. The pings are fine.
Would be interesting to see what proportion of the human population have *any* internet access. I suspect that many aren't fortunate enough to have a household.
Just go to any McDonald's or mall, and boom! Instant internet access. Wireless access, that is.
Even some public parks have them.
Not everyone lives in first world countries.