I grew up in a tiny hamlet of about 500 people (going back there in a month) and even we had a grain elevator. However, like many other small places, once the rail line got torn up the elevator was demolished. Even as a young teenager back then (this is over 20 years ago now) I thought it was a shame that they couldn't let such an iconic structure be. However, I think it had more to do with fire and safety hazards, rather than competition, that saw the end of the elevator. Whenever I travel back to the Prairies I always look out for them, but there aren't many left, especially in Manitoba (Saskatchewan is another story).
A lone cyclone windmill over a watering hole is fine too...
Brings back nice memories; orange dust like talc, sweat crusted on the brim of your hat, the stillness that sucks the air out of your lungs with furnace-like heat, the sweet taste of mossy water in the livestock tank...