We can't answer this question because it also depends on what kind of driving you do mostly? Mostly highway or city driving? It also depends on if you choose to buy the cheapest oil, oil filters, and skimp on the rest of the car engine maintenance.
If you treat you car with loving care and try not to be the cheapest person in the world like using homemade oil filters made from used toilet paper rolls and such then maybe you can stretch out the oil changes to this extreme.
If you want to do this on a regular basis and still not buy the premium replacement products, I don't think you are doing your car a service.
If it was a one time fluke where time and distance just snuck up on you and you realized that 10000 miles has passed since the last oil change you're probably fine to let it happen just once.
Either way, don't be a cheapo. A car is a necessary investment if you live where there isn't a viable public transportation system. If you insist on doing everything on the ubercheap? You're gambling with the engine's life....