Article misses the fallacy of the comparison. If I buy a cup of coffee, I get my end of the bargain immediately* and no further commitment on my part is needed. For most saas offerings though, I’m basically committing to a regular payment in perpetuity. Usually if I stop paying, I not only lose the immediate benefits, but also whatever I have put into the app in the time I used it. Even if it is just storage, if I ca…
I think the article did discuss your point, "But [with a cup of coffee] nowhere am I asked to 'subscribe' to anything. I buy it, enjoy it, and that’s it. I’m not committed to buy another cup ever again." Maybe you wanted him to emphasize that particular aspect more.
I can't recall the keyword for this in the realm of economics, but it's a weird thing to compare 'good value' across sectors. I do it quite often, wonder why I think X is such a rip-off when I won't even blink at Y - perhaps for that reason I've never had a problem with coffee-currencied pricing.
At least for consumables (coffee, groceries, SaaS in the sense that even if you don't consume a quota you consume a timeframe) I think there is value to be had in comparing their relative value, but only secondarily to comparison against something of the same type of course.