Many readers are surprised to learn that the average laserdisc only sold about 2,000 to 5,000 copies. I believe the largest-selling laserdisc ever was Jurassic Park at around 100,000 copies, and that was rare. Now, DVD is just getting started and still only averages around 5,000-10,000 copies per title. But the biggest seller on DVD after only a year on the market was Air Force One with over 200,000 copies sold. As for laserdisc as a format dying, I'm afraid there is nothing to do to stop it.
All mediums eventually die or change shape.
Whether it be a film camera, a musical instrument or a home video format, technology moves forward. Now, after only a year and half, DVD players are already at around the 650,000 mark. This is not to slag off laserdisc. But for arguable reasons, laserdisc just didn't capture the public's pocketbooks. I'm sure there will never be any way to ever truly know.