IIRC, this 75W Sylvania incandescent light bulb was in its socket on the wall of our basement room when we moved into the house 13 years ago. I've never replaced it. By contrast the one in my office ceiling needs to be replaced about three or four times per year.
This bulb does not burn for extended hours, but because of traffic in the room it is turned on and off 4-5 times per day, and my understanding is that the major stress on light bulbs is the heating/cooling cycle that occurs with being switched on and off, rather than the duration of being on.
When I was at the hardward store a couple weeks ago, I asked one of the proprietors; he said that the bulb is probably an old model built with a thick filament, and that "they don't make them like that any more."
Addendum: see tosommerfugle's comment re the long-term expense of a bulb like this.