I found this data on DVD player penetration at EOY 2002 interesting.
DVD Now in More than 40 Million U.S. Households
According to figures compiled by the DVD Entertainment Group based on data from the Consumer Electronics Association (CEA), retailers and manufacturers, more than 25 million DVD players were sold to consumers in 2002, a 50 percent increase over 2001, bringing the number of DVD households to more than 40 million. More than 10 million homes have two or more DVD players. There are currently more than 95 million DVD playback devices in American homes, including set top players, DVD-ROM drives and DVD-capable video game machines.
Compare that with today:
The number of U.S. homes with Blu-ray players, including Sony PS3s, home theater-in-a-box systems (HTiBs), and BD set-tops, now stands at 33.5 million--a year-over-year increase of 52 percent.
So by years end, Blu-ray players will have close to the same level of penetration as DVD players did after 5 1/2 years in their respective lifecycles.
And yet Blu-ray is doing only about 30% of the sales that DVD did. Wow.
Keep in mind that VHS did nearly $10 billion on its own in 2002, just about what DVD will do this year. So you can't say it's DVD's fault that Blu-ray's growth rate is plummeting, as DVD faced the same scenario back then with VHS.