A recent USA Today article stated that “perhaps less than 10% of the passengers who could use Wi-Fi to log on to the Internet actually are doing so.”
The article posited that price is the factor, as many travelers don’t want to pay the fees.
But considering what travelers grumpily pay for in terms of other additional optional fees and charges – $10 and up to board earlier, $9 for a mediocre sandwich, $20 and up for an extra checked bag, I don’t think the cost is the issue.