I don't understand your point. You say:

> Creativity is neither a property of who you are or what you do

Then you say:

> It’s closer to a mindset of curiosity, wonder and play.

Which has to be the property of what you do (the process) or who you are (the personality willing to embed those values), right?

> It’s the process that’s creative. Building a car can be creative. Buying a car is not.

Sure, but the process is "what you do" which directly contradicts what you're saying.

> For example, many programmers have a need for creativity within coding, but don’t feel they get it at their 9-5 job, and instead work a side project (like FOSS, indie game) because it’s a more creative experience.

Sure but most programmers don't do it. Simillarly many artists work on projects for companies and their own projects. My point is that you cannot reduce commercial work as not creative just because it's a 9-to-5.

I really fail to understand your point with this comment since it's not really saying anything coherent.

You also say

> The point is: same person, same activity yet one is more creative than the other.

Again, if that person is doing that activity then it is what they do i.e. you're calling the process creative. And in this case, we'll call that same person to be creative since they have the drive to work on their own project after a full 9-5 job. But if they were not doing it, we'll still consider them creative since it is a basic requirement at their 9-5. That is my point - both of them are creative. Degrees may vary depending on subjective perception but that was not what was being discussed.