Most people will either commute via car, or train. As someone who works from home ~3 days a week, and 20% at customer sites, a season ticket is a waste of money - even if you work from home 1 day a week, take out holidays, the season ticket is starting to save you a lot less.
I save £7/$11 a day on transport alone by not going into the office, not to mention the more valuable commute time savings. Food, I spend about the same or slightly less at home, as in the office we've got partially subsidised canteen.
Edit: I forgot to add, I'm putting about half that saving aside to improve my home office environment. The first savings went on a new printer/scanner, the next will soon be a nice high res. second display & maybe stereo bluetooth headphones.
Yeah... most people have a season ticket, so that's not correct.