You've gone far away from your original point in this thread which was how the PS2 is the most commercially successful console ever. I responded to that claim with several points. You only ever addressed two which was me saying they made very little money from the system(which I proved with the chart I posted where I showed PS4 and PS5 making 4 and 5 times more profit selling less as well as the PS1 making a billion more in profit selling less)  and how DVD playback was the main driver for it's success. Your original point of PS2 being #1 was refuted a long time ago but you're going to fight to the death over the one DVD point.

You keep bringing up attach rate as if it means something. It's merely a figure from taking software sales and dividing it by hardware sales. It doesn't mean everyone who bought a PS2 bought 11 games for it unless you can provide data showing the amount of games each person actually bought. PS2 only has 5 10 million sellers to Switch's 21(will most likely be 24 by the end of the year with SMPJ, Pokemon ZA, and Tomodachi life). This indicates that everyone was not going out and buying 11 games, but rather a portion of that 160m install base went out and bought 30 or even 40 games. I pointed out how I have 30 games for my Switch. Switch having so many games selling 10million plus is a good indicator of consumers purchasing multiple games for the system. It doesn't guarantee it, but you will have more confidence of higher hardware/software attachment from a system with 21 10 million sellers than a system with only 5(maybe 6 with Tekken 5?). 

further evidence is the PS2 had 167 million sellers vs. switch's 107. neither number adds up to the software figures they have which means there's a ton of lesser know games people bought. the casuals will only stick to the most well know games and won't by the obscure titles. These lesser known games will be bought by the hardcore gamers who tend to have large gaming libraries. Casuals will only buy the big name titles. Anytime any product has a huge number of sales is due to penetrating the casual market. The hardcore gamer buying 30 games is what gave the PS2 its massive hardware sales number. 

Why does this matter? if the consumer segment driving software sales are mostly hardcore gamers with huge libraries this leaves a lot of room for the casual who only bought a few games for their kids to play while they watched their collection of DVD movies. You can talk about how this or that standalone was cheaper, but it didn't provide video games for the kids to play. 

I never said in this thread the PS2 would fail without DVD playback, but it wouldn't get anywhere near the hardware sales it did as it wouldn't grab the casuals like it did.     

Yeah I feel like discussions not going anywhere. I’ll reach out to moderation about closing this thread.