IMO repeating the same keyword might be useful for hard of hearing old women but not google.
As a hard of hearing old woman myself, it's not very useful to have multiple instances of the same keyword (or even stemming) in your title. In fact, personally I think it's more likely to do you harm than good. I go OUT OF THE WAY to make every single title sound like a natural description of the page; the same as I would describe it if I were speaking about it, and I make sure my clients do that same.
If you don't think Google pays attention to that stuff in every area of the site - well you're more hard of hearing than I am.
If I was adding the company name, I would put it at the end. My assumptions are that the words at the beginning of the title are seen as being more important and it would not be helpful to start every title with the company name.