IF it's still working, yes. But circuit boards are remarkably fragile things, and cost far more to repair, then to buy new. In my experience, most of these cameras will struggle to have as long a life as their more-mechanical counterparts once did.
My 4 year old Samsung LCD TV just died due to a circuit board. It was 37" and would cost at least $400 to repair, and that was not gauranteed. New 51" plasma cost me $599.
IMO, Fuji's iterating it's bodies more slowly than some others.
Maybe. But I, not sure it's wise to generalize in either direction. I have a Canon Eos300D that is nearly 10 years old. Works perfectly.