If you're building up a tool inventory from scratch and all your power tools, etc. that will be needed, this won't be free :)
Then there's also the fear that an inexperienced person would have: "am I buying the right tools for the job?". Or, "will I ever do this kind of project again?" If not why don't I just hire a contractor to do the work for me instead of investing in tools I may never use again, and remove the fear of doing it wrong or causing more damage which in turn will end up costing more money.
The way things are done today it's relatively intimidating to someone who doesn't know the first thing about it. On the other hand I would argue that perhaps it's not necessary that the process of redoing the interior layout of the house should be intimidating or inaccessible to the average home owner.