Your example can be wholly explained by inadequate knowledge of visual design (UI/UX, to be specific), especially from a consumption/access position. That’s a technical outcome which is a result of ignorance or failures, not a sales outcome from an explicit strategy of obfuscation.

To put it another way, people making too-small signs for their yard sale that drivers just cannot see at speed, is not the same as companies going “call for pricing”. That would be the same as signs saying, “call us for the yard sale address”. The former is wholly unintentional and borne out of ignorance, the latter is completely intentional anything but accidental.