Why not sell it?
I don't know either.
Yes. Then we'd see how really valuable it is. Not.
In 2008 gyros and batteries begin to fail. If it has not been serviced before then, the satellite begins to tumble and cannot be controlled. If the buyer fails to service the telescope (highly likely given the cost of the mission versus the return on investment payoff), then it crashes without knowing where it's going. Remember the lawsuits from Skylab?