A very analogous situation to this one … which I encounter every day (and, uhh, have encountered for heh… decades) :rolleyes: is “source-code.” They want to have, not only the final-result of whatever you’ve done, but the means by which you produced it.
And-d-d-d-d… the lesson I quickly learned is: “sure, give it to ‘em … with a smile … they’re not goin’ anywhere!”
They’re merely coverin’ their butt … and, heh … “if it was your butt, you’d do the same!” :yes:
Never-mind the “per-project C-Y-B details.” What (both-of-you!! are) looking for is: a long-term relationship. You want the client to want-to “return to you, voluntarily and willingly, again and again and again.” And-d-d-d-d… so does the client!
Give the client, freely, not only the finished work-product but also all of the constituent files. Offer to be happy to explain to any other-company exactly how the various files work … “exactly how,” to the smallest detail, “you did it.” Yessir, there are no secrets here, there’s nothing strong-arming you to me … but if you’re satisfied with my work and want to do business like this again, I’m the Devil-You-Know!
… and, so you are. The Customer does return to you. Again and again. And furthermore, he tells his friends. You “wow!” them, too. The word gets around.
Of this, a career is made. (And you never stop workin’ your butt off… )