Internal projects is the one outlier there I don't agree with. At every single company I've worked in, I've spearheaded new ideas and new projects I think it would be worthwhile for the company to pursue. It has happened that the company chooses to invest in the idea I brought forward, but in that case I wouldn't consider myself the "founder" of "idea X". I was the origin of the idea, the main cheerleader, the developer of the prototype, the project manager, etc., but not the "founder".

I don't know, maybe it's an asinine point, but I don't think that's typically how the word founder is used, and it still seems funny to me.