"Prior to the integration of in-flight Wi-Fi, most airline passengers passed their time at 30,000 feet completely disconnected from the world below them — but these days, that’s a highly uncommon occurrence." Am I missing something here? 99% of the flights I take don't offer Wi-Fi, and in most cases not even power outlets. And those that do have Wi-Fi seem to be charging 30% of my monthly internet bill to provide it…
Data >> Anecdotes [1] 60% of domestic flights have wifi on them. My apologies if you are flying outside the US or using regional carriers 98% of the time (which might not be included here). 1: http://www.cnbc.com/2015/06/26/for-onboard-wi-fi-not-all-air... (this was google result number one for 'percent of flights with wifi')
Just having a route as wifi capable does not mean you will get wifi on a given flight.