why not working from home?

I love working from home.
Communting it wastes money and energy yet still millions of us see no alternative to the daily commute... accoding to Commuting: the end of the road? - SustainIT, Business - The Independent
Why company do not push for home working - less commuting = less waste of energy and people will be more relax and work better and longer from home without distructions - if yopu don't have kids.