What about the cost of Live/PS+. Assuming the consumer who buys 11+ games over 7 years is also playing games online, the cost of Live/PS+ would be in addition to those games. With that in consideration, $15 a month Gamepass Ultimate (which includes Live) is $5 more monthly than Live, or $60 a year. If you pay for Live annually, it's $60, while Gamepass Ultimate is $120 ($60 for 6 months is the largest prepaid amount I could find from a normal retailer), so again, $5 a month more than Live.The most popular home console last generation which spanned over a period of 7 years had reached an attach ratio of ~11.5 games per unit just before it's successor launched ...
That's easily an average of less than 2 games per year and considering how trivial it is to see discounts on software just after several months on customers of that system and it's main competitor the only ones who truly stand to benefit from a subscription service are the outliers not the standard consumer ...
So $60 a year for Gamepass over 7 years is $420. Divided by 11 games is about $38.
I'm not contesting the value of Gamepass just adding numbers for context. If a person spends less than $38 a game and buys less than 11 games over a console's lifetime it's likely not a good deal. Unless they only play MLB The Show.