> The flaw with this analogy is that when you need to revisit the house you built with a hammer and nails, you can continue using your nail gun.

Say clients wanted a kitchen completely remodeled, you still don't have to use hammer and nails or nail gun --- I could easily demolish the kitchen and 3D print the new kitchen

What you know/done before doesn't necessarily dictate what you'll [can] do (which is the case on the Web)