I think that this study fails to address that they may confuse cause and effect. What is the reason for a telecommuting arrangement? Why doesn't that person just move closer to the job location? The answer is often that he has family ties. I would suspect that telecommuters are significantly more likely to have families, and that may have a pronounced effect on their views of their work life.
I think the biggest roadblock to moving closer to work, is that a lot of people are home owners. And selling a house is a pain in the ass and is a huge commitment. Which would be fine if there was job security, but in this day and age, you won't be working for a single company your whole life
Add a family and kids and now you're uprooting everyone in your house from their schools and relationships and jobs.