I only somewhat agree. There are ways your users tell you your product is too cheap, without actually having to tell you. One good indicator is when you have a lot of people signing up, and then not using it, in which case your product is so underpriced that it attracts indifference.

I've seen companies sign up for a $3K/month product, then not use it for 6 months.

Large companies do silly things.

I've seen multi-$100k investments go unused for so long as to become worthless, most notably in the form of enterprise-scale battery backups which needed to be used within X months and were still on the original shipping pallets 2 years later.

I think the point of this article can only really be taken as applying to the consumer web; while its point might ring true for enterprise customers, they're a much more murky environment in general.

Sure I've seen it too, but I'm referring to trends here.

In the real world people will rarely tell you that they are going to a competitor if you don't stop raising your prices.