If you create a sharp blade through practice and a great deal of time and experimentation, trial and error, and USE that blade, hold it, maneuver it, polish it, and just look at it for a long time before bringing it to your face (or your board), you're going to have a great deal more understanding of what it's going to do, how it's going to do it, and how you need to handle it than if you had purchased it, swiped it a few times on a strop (or steel) and got down to business.
When I started my current job, I never really felt comfortable with the knives there until I'd taken each one to the stones and gotten very familiar with the edge that they had. And when someone else gets their hands on them and screws with the edge... I feel it immediately upon using the knife and it's not as comfortable for me to use until I can fix it.
I feel the recommendation to buy a shave ready and then another certainly makes straight shaving much easier to get started, but I doubt it makes the experience as a whole better. I think we can presume that if you need a razor, you are old enough to not require immediate rewards, that you understand the reward of study, practice, and work... and know that doing these things will pay off.
Now if someone comes in wanting to shave with a straight tomorrow to save money, yeah... the ready to go razor is obviously a better choice. If someone wants to shave with a straight for life, I can see the benefit of having them learn the finer points of care and feeding for the razor before they become attached to using it as a tool.