Could the early web have been developed if the technological requirements had been that no user ever see a 404? Web technology could be developed as freely and

Could the early web have been developed if the technological requirements had been that no user ever see a 404? Web technology could be developed as freely and ad-hoc as it was because it was good enough for it to 'mostly work' most of the time in the beginning. When we're dealing with a technology that transfers money, then it's being developed to function under an enormous pressure that will exploit any weakness immediately, and cause it to fail critically if any exists. In that regard it's more like building a rocket than building a photo sharing site.