I work for BT - pioneer of the 'home working' approach, and I have been given the option, but refused to take it.
The incentive is purely for the business - it costs thousands of pounds a year to provide a desk in city centre office space, and I would not wish to make my home my workplace.
As someone who has commuted to my work for nearly forty years, I am happy with the routine, the company I have here, and the famous 'work/life' balance.
Colleagues i know who work from home seem unable to work sensible office hours, and are e-mailing late into the night, simply because the opportunity is there.
Add to that the still insurmountable approach that working from hiome is not really 'working' it's just diddling about, and there are far more reasons not to do so.
I work for the company - they provide my facilities. I live at home - I provide the facilities. never the twain shall meet.