That was kind of my point, it's a behavior across any industry, it's not specific to marketing, or dev shops, finances, law... The thing with consultancy it's

That was kind of my point, it's a behavior across any industry, it's not specific to marketing, or dev shops, finances, law... The thing with consultancy it's kind of what you've said: they've built models/systems that kind of work with minor tweaks and sell it to other companies. It's done because the perception of building those systems from the ground up seem more expensive then to get it "installed"... which might be true for many scenarios, but for others, it might not.