Only Premiership teams (and a few Championship sides) can afford it. To be honest, our winters are alot milder these days (thanks global warming), so comparatively few matches get postponed
We haven't had a lengthy cold spell for probably 20 years.....the last one being 85/85 season when between Jan and March we didn't play a single home league game, 6 away games on the spin and won the lot
In classic STFC stylee....one of the directors who was also a farmer...(name escapes me for now).....was charging the club some thousands of pounds for straw to be laid on the pitch to try and keep the frost out.