Yep, that's certainly part of it.
Anyone who bought a good system 10 years ago is probably still very happy with it today; I know I am.
I had planned to upgrade my projector once the bulb burned out in a few years, but it happened (or so I thought) earlier than expected so I bought a replacement bulb instead. Turned out to be a thermal cutoff tripped by overheating after a power outage... took the projector apart, reset the switch, everything fine and now I have two bulbs.
I may be watching BluRays at 720p until I'm well into my 60s